Selasa, 30 April 2019

Raptors need more from struggling bench - TSN

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TORONTO – The Raptors’ depth – a defining quality of last season’s team – isn’t what it used to be.

Backup centre Jakob Poeltl is in San Antonio, traded with DeMar DeRozan for a pair of starters, Kawhi Leonard and Danny Green, over the summer.

Delon Wright and C.J. Miles – both key contributors off the bench – were shipped to Memphis with Jonas Valanciunas in the deadline deal that brought starting centre Marc Gasol north.

Pascal Siakam is now starting, deservedly so, making Fred VanVleet the lone holdover with the second unit.

Toronto’s vaunted “bench mob” is a thing of the past and it’s not coming back, but that’s okay.

Even if you gave team president Masai Ujiri the option of a do-over it’s hard to imagine him hitting the reset button on the last nine months.

Depth is a nice luxury to have over the course of a long 82-game season. In 2017-18, Dwane Casey’s Raptors team would confidently turn to a reliable five-man bench unit that wouldn’t just hold serve for the starters, they would often take over games. It allowed them to manage minutes, keep everybody healthy and fresh, and win a franchise-record 59 games.

In the playoffs it meant very little, though. Few teams use 10 guys in their postseason rotation and even fewer do it successfully. This is the time of the year when you want your best players playing the most, and the team with the better best players will win out more often than not.

The highly anticipated second-round series between the Raptors and Philadelphia 76ers is a matchup of a couple teams that wisely consolidated their depth to build two of the league’s best starting lineups. They both feature superstars, all-stars, former all-stars and future all-stars. And, as you can imagine, they’re both leaning heavily on those players.

Through two games, both team’s starters have played 75 per cent of all available minutes. Neither club is asking much of its bench. Still, they do need something from their reserves in those remaining minutes.

That seemed like an advantage the Raptors would have going into the series, even if it were only a marginal one. So far, it hasn’t played out that way.

In roughly the same amount of playing time, Philly’s bench has outscored Toronto’s 45-15 overall and 26-5 in the Sixers’ series-tying win on Monday.

Given the talent that both teams start the game with, the benches have already had a bigger impact in this series than most anticipated. It was the difference in Game 2.

On a night in which the Sixers got just 18 points from their all-stars – Joel Embiid and Ben Simmons – and Tobias Harris only scored nine, they got unlikely contributions from journeyman forward James Ennis III (13 points) and Greg Monroe (10 points), who the Raptors traded in a salary dump at the deadline.

Meanwhile, Kawhi Leonard was typically great for the Raptors, following up his 45-point Game 1 performance with 35 points, and Pascal Siakam and Kyle Lowry each scored 20, but Toronto got next to nothing from its supporting cast.

Serge Ibaka made just one of his five shots and had twice as many fouls (four) as points (two) in 13 minutes. The Raptors were outscored by 17 in Norman Powell’s 16 minutes. VanVleet was held scoreless and was a minus-18 in 18 minutes. He didn’t have an assist.

“We’ve got to find an opportunity to be better,” VanVleet said on Tuesday. “We know that and we’ll look to do that in the next game. But it’s something that we’ve been trying to figure out for a few games now. Starting the playoffs it’s kind of the first time that we’ve had these types of lineups. But us three coming off the bench definitely have to find a way to be impactful and just be better than we’ve been. It’ll happen.”

The Raptors bench has had a rough season, to be sure. The team ranked 21st in bench scoring (35.1 points per game) and 24th in point differential (-107), down from fifth (41.2) and first (+296) respectively last year. It’s not for a lack of talent, necessarily, but likely a product of constant turnover.

Unlike the “bench mob” from last season, this group hasn’t had the benefit of continuity and, clearly, they haven’t built the same kind of chemistry. With injuries, load management nights, the big mid-season trade and general tinkering, coach Nick Nurse’s rotations have been a revolving door.

At least partially, that’s been by design. All season, Nurse has preached experimentation and improvisation in the hopes of becoming a more flexible team than they’ve been the last few postseasons. However, when faced with a familiar dilemma in Game 2 – stick with what’s been working or matchup with the other team – Nurse made the same decision that Casey would routinely get criticized for.

Nurse has been using a strict eight-man rotation, with the starters getting the bulk of the minutes and a ninth man (Jodie Meeks) buying him some time here and there. For the most part it’s been successful – after losing Game 1 of their first-round series to Orlando, the Raptors had won five straight contests. However, Brett Brown and the Sixers had game planned for that rotation, and on Monday they exposed it.

Philadelphia does some unique things with its rotation. Embiid – who has been battling a knee injury and also had the stomach flu on Monday – checks in and out, playing short spurts. Brown has timed Embiid’s substation pattern to coincide with Ibaka’s minutes and avoid Gasol, who has defended him well, as much as possible. Nurse has opted not to counter by matching Gasol’s minutes to Embiid’s.

“For me it was trying to stick to our guns a little bit,” Nurse said. “And our rotations felt really good for five straight games. Like, really really good, not just okay, like, really really good. And again, don’t think that I’m not tinkering with those in my head all game long. Then of course when it’s over some of the suggestions and some of the things I was thinking about doing I wish I would have done. You always do that, right? I think the thinking was, again, I really liked the way Serge played Embiid in the regular season. He had some really good moments against him there so I wanted to continue to explore and take a look at that a little bit.”

The Sixers are also one of very few teams that open the second and fourth quarters with their starters on the floor. The Raptors are still opening those quarters with their three reserves and, to little surprise, have been outplayed in those minutes. The Sixers played just one minute without at least three starters on the court in Game 1. The Raptors played 14.

Separating the three primary reserves – VanVleet, Ibaka and Powell –​ as much as possible and sprinkling them in with starter-heavy units could negate the advantage the Sixers have created for themselves. Patrick McCaw has been sparingly used since his return from a thumb injury – giving him a shot in the Meeks role or eliminating those ninth-man minutes altogether are also options to consider. Unfortunately, OG Anunoby is still out after undergoing an emergency appendectomy three weeks ago and without a timetable for his return. He’s expected to miss the rest of this series, at minimum. The Raptors could certainly use him, but with Philadelphia also missing one of its top reserves in Mike Scott, Anunoby's absence shouldn’t excuse Toronto's poor bench play so far.

It’s not just that the Raptors’ primary bench players need to play better, and they do, but they could also be deployed better. As we know, the playoffs are chess match. Brown and the Sixers made their move, now it’s Nurse’s turn to answer. How he and the Raptors adjust in Thursday’s Game 3, and for the rest of this series, will be telling.

“It didn’t go quite well [in Game 2],” Nurse said. “I’m not sure I’d blame it on our rotation [Monday] night. But there are a number of things. You’ve always got to examine anything you think it can be and that’s one of them. We’ll continue to examine it and think about it and maybe I’ll pull the trigger in a different direction next game.”



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May 01, 2019 at 06:16AM

Olney: Jays could get 'really good' return in potential Stroman, Sanchez trade - TSN

Lions release 10 including Elimimian and Vandervoort - CFL.ca

VANCOUVER — The BC Lions have officially released veteran linebacker Solomon Elimimian, the team has announced.

The star defender was one of 10 cuts announced Tuesday, in accordance with the CFL’s requirement that team rosters be reduced to 75 players by May 1.

Former first round picks Danny Vandervoort and Charles Vaillancourt were also among those released.

“We have had lengthy discussions with Solomon over the past few months and we believe at this time that allowing him to become a free agent is the best course of action for both parties,” said General Manager Ed Hervey.

The full list of players released is below:

DL David Menard (N)
LS Mike Benson (N)
WR Danny Vandervoort (N)
OL Charles Vaillancourt (N)
DL Mike Ramsay (I)
DL Charles Walker (I)
WR Larry Cobb (I)
WR Travion Tucker (I)
DB DeVron Davis (I)
LB Solomon Elimimian (I)

Elimimian departs the Lions as the club’s all-time leader in defensive tackles with 745 along with four CFL all-star selections, the league’s Most Outstanding Player award in 2014, two Most Outstanding Defensive Player selections (2014, 2016) and a Most Outstanding Rookie award.

He originally signed with the club as a free agent in 2010 and played 118 games over nine seasons along with seven playoff games and the 2011 Grey Cup.

“In an effort to build the kind of team our fans expect this season we were very aggressive in free agency,” noted Hervey. “Acquiring incredibly talented players such as Mike Reilly, Duron Carter and Sukh Chungh have changed the face of our team. Operating under a salary cap however, means difficult personnel decisions are required moving forward.

“We are tremendously grateful for Solomon’s contributions to our organization and I greatly appreciate his patience and professionalism during this time.”

Vaillancourt, 26, was drafted fifth overall by the Lions in the 2016 CFL Draft. He played 29 games throughout his first two seasons in the league before spending all of 2018 on the six-game injured list.

A highly-touted receiver out of McMaster, Vandervoort failed to crack the Lions’ starting lineup, finishing his time in BC with just one catch in 26 games.

Veteran long snapper Mike Benson spent five seasons with the club after joining in 2014, while defensive lineman David Menard tallied 15 sacks in half a decade in BC.



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May 01, 2019 at 07:32AM

Tottenham need understated Christian Eriksen more than ever - The Times

The clattering was incoming. It was against PSV Eindhoven this season and Tottenham Hotspur were battling to stay in the Champions League. Christian Eriksen had his back to goal, and the Spurs playmaker knew he was about to be battered. He didn’t flinch. He would take the pain for the cause.

The PSV defender Nick Viergever was determined to intercept a ball coming in from Mousa Dembélé and if that meant going through the back of Eriksen, so be it. As the ball arrived, Eriksen instantly flicked it on to Harry Kane, and took the hit from Viergever.

Eriksen could have stayed down, winning an easy free kick in a promising position 20 yards out, but he immediately leapt up and rejoined the attack. Tottenham’s…



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April 30, 2019 at 06:01AM

Nuggets beat Portland in Game 1, Jokic scores 37 - TSN

DENVER — Nikola Jokic scored 37 points and the Denver Nuggets withstood Damian Lillard's 39-point effort and Enes Kanter's strong return to Portland's lineup in a 121-113 win over the well-rested Trail Blazers in the opener of their second-round playoff series Monday night.

Lillard, who struck for 50 points, including a 37-footer at the buzzer to oust Oklahoma City in five games, missed 8 of 12 3-point attempts and Gary Harris blocked his 3 from behind in the closing minute to keep the Trail Blazers from closing in.

Jamal Murray added 23 points for Denver, which was making its first appearance in the second round in a decade, and Paul Millsap scored 19.

"Saturday night, an emotional high, winning a Game 7, that was part of my biggest concern about tonight," Nuggets coach Michael Malone said. "Obviously you're worried about guarding them but how would we react from that emotional hangover? I thought our guys did a pretty good job."

Game 2 is Wednesday night at the Pepsi Center.

Back-to-back layups by Lillard pulled Portland to within five points with nine minutes left, but Jokic sank a pair of free throws off CJ McCollum's flagrant foul sandwiched by a pair of dunks by Mason Plumlee as Denver pushed its lead back to double digits at 107-96.

Portland never got much closer.

Denver was coming off a 90-86 win over San Antonio 48 hours earlier, their first Game 7 victory since May 3, 1978, against Milwaukee. The Trail Blazers, who are in the playoffs for the sixth straight season, had nearly a week off after dispatching Oklahoma City in five games to advance for the first time in three years.

Yet, the Nuggets had the energy at altitude and won the fourth time in five games.

The Trail Blazers did get a boost from Kanter, who separated his left shoulder in Game 5 against the Thunder. He had 14 points by halftime when Portland trailed 58-55.

"Enes was terrific, very efficient, finished around the basket playing through the shoulder injury," Trail Blazers coach Terry Stotts said. "I couldn't have asked any more of him. He was terrific."

The Nuggets scored 23 points off Portland's 18 turnovers.

"It was a good offensive game but I thought the turnovers really made the difference," Stotts said.

Kanter, who signed with Portland after being waived by the Knicks following the trade deadline, was originally a backup to starter Jusuf Nurkic, but his role was magnified when Nurkic broke a leg March 25. Kanter averaged 13.1 points and 8.6 rebounds in 23 games down the stretch, then put up 13.2 points and 10.2 rebounds in the first round.

Malone said before tip-off he was hopeful that gave his young team some mettle.

"Knowing we can be down 2-1 and a lot of people had written us off as a bunch of frauds and to come back win the last three out of four, that's got to give you confidence," Malone said. "Game 2 at home was a must-win; Game 4 on the road was a must-win, and obviously Game 7, we know what those are all about. I take so much pride and joy in thinking about all the young guys that grew up in that first round. So now we have to do it all over again."

Jokic, who averaged 23.1 points, 12.1 rebounds and 9.1 assists in the first round against San Antonio, made all 12 of his free throws and added nine rebounds and six assists.

TIP-INS:

Portland: The Trail Blazers lost three of four to the Nuggets in the regular season, but the Nuggets only outscored them by a cumulative six points. ... The Trail Blazers outshot the Nuggets 51.9 per cent to 50.6 per cent.

Denver: The Nuggets were coming off a 2-for-20 performance from 3-point range Saturday night. ... The Nuggets are 4-1 at the Pepsi Center in the playoffs after going an NBA-best 37-4 at home during the regular season. ... Denver was 27 of 31 from the free throw line.

THIRD TIME

The Blazers and Nuggets are meeting for a third time in the post-season, with both winning one series. Denver beat Portland 3-1 in the first round in 1986, while Bill Walton and Maurice Lucas led the Blazers to a 4-2 series win in 1977 on their way to an NBA title.

HOW LONG OF A WAIT?

Malone and Colorado Avalanche coach Jared Bednar promised to meet for a steak after their seasons are over. It could be a while, though. Both teams are in the second round of the playoffs, marking the first time both have made it to the second round in the same season since the Avalanche moved to town before the 1995-96 season.

"It's an exciting time to be a Colorado sports fan," said Bednar, whose Avs are tied 1-1 in their best-of-7 series with San Jose. "Everyone is excited about it. ... It's a fun spring."

Asked if he hoped to meet up with Malone in, say, June, Bednar laughed.

"I hope so," he said.

___

Follow Arnie Melendrez Stapleton on Twitter: http://twitter.com/arniestapleton

___

More AP NBA: https://apnews.com/NBA and https://twitter.com/AP_Sports



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April 30, 2019 at 12:20PM

Astronomers witness 'one of the most extraordinary black hole systems' - CNN

The black hole, known as V404 Cygni, doesn't behave like others. The jets shoot out possibly within minutes of each other and in all different directions. And while the researchers admit that black holes are some of the most extreme objects in the universe, this one is different.
"This is one of the most extraordinary black hole systems I've ever come across," study author James Miller-Jones said in a statement. Miller-Jones is also an associate professor at Curtin University's International Centre for Radio Astronomy Research.
The study published Monday in the journal Nature.
This is the first photo of a black hole
"Like many black holes, it's feeding on a nearby star, pulling gas away from the star and forming a disk of material that encircles the black hole and spirals towards it under gravity," he said. "What's different in V404 Cygni is that we think the disk of material and the black hole are misaligned. This appears to be causing the inner part of the disk to wobble like a spinning top and fire jets out in different directions as it changes orientation."
The black hole was first discovered in 1989 because it released jets and radiation. Previous outbursts associated with this black hole were noted in 1938 and 1956 and found on archival photographic plates.
V404 Cygni caught the attention of astronomers around the world when it unleashed another bright outburst that lasted for two weeks in 2015. Telescopes everywhere trained on the event, which led to a wealth of observational data.
Normally, jets shoot out from the poles of black holes. These jets were firing off in different directions at different rates over a couple of hours.
Astronomers have found the fastest-growing black hole ever seen, and it's got a monster appetite
The black hole itself is rotating and the gravitational pull is so strong, it's actually pulling nearby space and time around with it. This is called frame-dragging.
The material in the jets is blasted out from the black hole's rotating accretion disk. The disk forms when material from a nearby star is pulled into a circle around the black hole.
For scale, the black hole is nine times more massive than our sun and V404 Cygni's disk is 10 million kilometers across. The jets shoot out material at 60% of the speed of light.
Because the spin axis of the black hole is misaligned, frame-dragging also warps part of the disk, causing an intense wobbling that is responsible for the jets shooting off in different directions.
These are the first massive black holes from the early universe
"This is the only mechanism we can think of that can explain the rapid precession we see in V404 Cygni," Miller-Jones said. "You can think of it like the wobble of a spinning top as it slows down, only in this case, the wobble is caused by Einstein's general theory of relativity."
The researchers had to use a different technique to capture what was happening in the black hole. Normally, they use long exposures.
"These jets were changing so fast that in a four-hour image we saw just a blur," said Alex Tetarenko in a statement, another of the study authors and East Asian Observatory Fellow.
Instead, 70-second-long individual exposures were combined to make a film of the action the astronomers were witnessing.
"We were gobsmacked by what we saw in this system — it was completely unexpected," said Greg Sivakoff in a statement, study author and associate professor at the University of Alberta's department of physics. "Finding this astronomical first has deepened our understanding of how black holes and galaxy formation can work. It tells us a little more about that big question: 'How did we get here?'"

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2019-04-30 17:20:00Z
52780280722798

Astronomers witness "one of the most extraordinary black hole systems" - CNN

The black hole, known as V404 Cygni, doesn't behave like others. The jets shoot out possibly within minutes of each other and in all different directions. And while the researchers admit that black holes are some of the most extreme objects in the universe, this one is different.
"This is one of the most extraordinary black hole systems I've ever come across," study author James Miller-Jones said in a statement. Miller-Jones is also an associate professor at Curtin University's International Centre for Radio Astronomy Research.
The study published Monday in the journal Nature.
This is the first photo of a black hole
"Like many black holes, it's feeding on a nearby star, pulling gas away from the star and forming a disk of material that encircles the black hole and spirals towards it under gravity," he said. "What's different in V404 Cygni is that we think the disk of material and the black hole are misaligned. This appears to be causing the inner part of the disk to wobble like a spinning top and fire jets out in different directions as it changes orientation."
The black hole was first discovered in 1989 because it released jets and radiation. Previous outbursts associated with this black hole were noted in 1938 and 1956 and found on archival photographic plates.
V404 Cygni caught the attention of astronomers around the world when it unleashed another bright outburst that lasted for two weeks in 2015. Telescopes everywhere trained on the event, which led to a wealth of observational data.
Normally, jets shoot out from the poles of black holes. These jets were firing off in different directions at different rates over a couple of hours.
Astronomers have found the fastest-growing black hole ever seen, and it's got a monster appetite
The black hole itself is rotating and the gravitational pull is so strong, it's actually pulling nearby space and time around with it. This is called frame-dragging.
The material in the jets is blasted out from the black hole's rotating accretion disk. The disk forms when material from a nearby star is pulled into a circle around the black hole.
For scale, the black hole is nine times more massive than our sun and V404 Cygni's disk is 10 million kilometers across. The jets shoot out material at 60% of the speed of light.
Because the spin axis of the black hole is misaligned, frame-dragging also warps part of the disk, causing an intense wobbling that is responsible for the jets shooting off in different directions.
These are the first massive black holes from the early universe
"This is the only mechanism we can think of that can explain the rapid precession we see in V404 Cygni," Miller-Jones said. "You can think of it like the wobble of a spinning top as it slows down, only in this case, the wobble is caused by Einstein's general theory of relativity."
The researchers had to use a different technique to capture what was happening in the black hole. Normally, they use long exposures.
"These jets were changing so fast that in a four-hour image we saw just a blur," said Alex Tetarenko in a statement, another of the study authors and East Asian Observatory Fellow.
Instead, 70-second-long individual exposures were combined to make a film of the action the astronomers were witnessing.
"We were gobsmacked by what we saw in this system — it was completely unexpected," said Greg Sivakoff in a statement, study author and associate professor at the University of Alberta's department of physics. "Finding this astronomical first has deepened our understanding of how black holes and galaxy formation can work. It tells us a little more about that big question: 'How did we get here?'"

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2019-04-30 17:01:00Z
52780280722798

NASA head issues meteor warning, calls for cooperation to meet threat - NBCNews.com

/ Source: CNBC.com

By Chloe Taylor, CNBC

Meteors that could destroy an entire U.S. state are a real threat to Earth, NASA’s chief warned on Monday.

Speaking at the Planetary Defense Conference in Washington, D.C., NASA Administrator Jim Bridenstine warned that the risk posed by meteor crashes was not being taken seriously.

“This is not about Hollywood, this is not about movies, this is about ultimately protecting the only planet we know right now to host life,” he said.

Bridenstine pointed to the meteorite that exploded over the Russian city of Chelyabinsk in 2013, which had “30 times the energy of the atomic bomb at Hiroshima” and injured around 1,500 people. Just 16 hours after the crash, NASA detected an even larger object that approached the earth but did not land on it, he revealed.

NASA Administrator Jim Bridenstine at the Planetary Defense Conference at the University of Maryland on April 29, 2019.Joel Kowsky / NASA

“I wish I could tell you that these events are exceptionally unique, but they are not,” Bridenstine said. “These events are not rare — they happen. It’s up to us to make sure that we are characterizing, detecting, tracking all of the near-Earth objects that could be a threat to the world.”

According to scientific modeling systems, such events are expected to happen once every 60 years — but Bridenstine pointed out that destructive meteorites had crashed on the earth three times in the last century.

In 2018, the White House published an action plan that required NASA to detect, track and characterize 90 percent of near-Earth objects measuring 140 meters (460 feet) in diameter — but Bridenstine admitted on Monday that the space agency had a long way to go to meet that goal.

“We’re only about a third of the way there,” he said. “We want more international partners that can join us in this effort. We want more systems on the face of the Earth that can detect and track these objects, and we want to be able to feed all of that data into one single operating system so that ultimately, we have the best, most accurate data that we can possibly get.”

Bridenstine warned that failing to invest in such a network could have catastrophic consequences.

”(At 140 meters) it’s big enough to destroy a state in the United States of America,” he said. “It’s big enough to destroy an entire European country.”

“We know for a fact that the dinosaurs did not have a space program,” he added. “But we do, and we need to use it.”

Earlier this month, NASA awarded a contract to Elon Musk’s SpaceX that will see the company provide launch services for the agency’s Double Asteroid Redirection Test (DART) mission. The $69 million mission, expected to launch in 2021, will test the earth’s capability of deflecting an asteroid by colliding a spacecraft with it at high speed.

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2019-04-30 15:09:00Z
52780277812415

Electrical issue on Station delays Dragon launch - NASASpaceflight.com

Electrical issue on Station delays Dragon launch – NASASpaceFlight.com

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https://www.nasaspaceflight.com/2019/04/electrical-issue-station-dragon-crs-17/

2019-04-30 13:44:43Z
52780281868932

NASA chief warns asteroid threat is real: ‘It’s about protecting the only planet we know to host life' - Fox News

NASA Administrator Jim Bridenstine is sounding the alarm that an asteroid strike is not something to be taken lightly and is perhaps Earth's biggest threat.

Speaking at the International Academy of Astronautics' 2019 Planetary Defense Conference in College Park, Md., on Monday, Bridenstine said the space agency and other asteroid scientists need to make sure people understand that the threat is very real and not just the imagination of big-budget blockbuster movie directors.

"We have to make sure that people understand that this is not about Hollywood, it's not about movies," Bridenstine said at the conference, according to Space.com. "This is about ultimately protecting the only planet we know right now to host life, and that is the planet Earth."

NASA GAMEPLANS MASSIVE ASTEROID STRIKE

"We know for a fact that the dinosaurs did not have a space program. But we do, and we need to use it," Bridenstine added, attempting to portray planetary defense on the same level as a return trip to the Moon. The Trump administration wants to see astronauts return to the Moon by 2024, with or without the help of NASA.

NASA Administrator Jim Bridenstine testifies before the House Committee on Science, Space and Technology on April 2, 2019, during a hearing to review NASA's fiscal year 2020 budget request.

NASA Administrator Jim Bridenstine testifies before the House Committee on Science, Space and Technology on April 2, 2019, during a hearing to review NASA's fiscal year 2020 budget request.

Bridenstine knows the perils of asteroid strikes all too well. In February 2013, he had been a Congressman in Oklahoma for just a month when a devastating asteroid streaked across the Russian sky.

Known as the Chelyabinsk Event, it was the largest known meteor strike in over a century and it injured more than 1,600 people. It "released the energy equivalent of around 440,000 tons of TNT," according to NASA.

"I wish I could tell you these events are exceptionally unique," Bridenstine said during the presentation, noting they have occurred three times in the past 100 years. "But they are not."

Currently, there are two asteroid-centric missions going on around the world —  NASA's OSIRIS-REx probe, which reached the Bennu asteroid in December 2018, and the Japanese Hayabusa2 spacecraft, which recently "bombed" the Ryugu asteroid in an effort to learn more about it.

HOW AMERICA CAN GET ITS SLICE OF THE $1 TRILLION SPACE ECONOMY

Bridenstine highlighted the scientific importance of both of these missions but added that planetary defense is also an important component. "Yes, it's about science, it's about discovery, it's about exploration, but one of the reasons we do those missions is so that we can characterize those objects to protect, again, the only planet we know to host life."

"We have to use our systems, use our capabilities to ultimately get a lot more data, and we have to do it faster," Bridenstine said.

Planetary defense

When it comes to planetary defense, NASA is not sitting on its haunches, having taken several steps to protect Earth by detecting and tracking near-Earth Objects, also known as NEOs.

Last June, NASA unveiled a 20-page plan that details steps the U.S. should take to be better prepared for NEOs, asteroids and comets that come within 30 million miles of Earth. Lindley Johnson, the space agency's planetary defense officer, said at the time that the country "already has significant scientific, technical and operational capabilities" to help with NEOs, but implementing the new plan would "greatly increase our nation’s readiness and work with international partners to effectively respond should a new potential asteroid impact be detected.”

There are approximately 18,000 known NEOs and that number is constantly growing.

MYSTERIOUS INTERSTELLAR METEOR MAY HAVE SLAMMED INTO EARTH IN 2014

In 2016, NASA formalized the agency’s prior program for detecting and tracking NEOs and put it inside its Science Mission Directorate.

NASA will launch its first asteroid defense mission, the Double Asteroid Redirection Test (DART) mission, in 2022. Earlier this month, NASA awarded a $69 million contract to SpaceX, the space exploration company led by Elon Musk, to help with DART.

Currently, asteroid scientists from around the world are conducting a drill showing what the various global agencies would do about a potential asteroid collision. For the first time, the drill is being played out over social media. Updates of the hypothetical event are being shared on the ESA Operations Twitter account until May 3.

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2019-04-30 13:28:01Z
52780277812415

What if an asteroid was about to hit Earth? Scientists ponder question - Phys.org

A Nasamosaic image of asteroid Bennu, composed of 12 PolyCam images
A Nasamosaic image of asteroid Bennu, composed of 12 PolyCam images

Here's a hypothetical: a telescope detects an asteroid between 100 and 300 meters in diameter racing through our solar system at 14 kilometers per second, 57 million kilometers from Earth.

Astronomers estimate a one percent risk the will collide with our planet on April 27, 2027. What should we do?

It's this potentially catastrophic scenario that 300 astronomers, scientists, engineers and emergency experts are applying their collective minds to this week in a Washington suburb, the fourth such international effort since 2013.

"We have to make sure people understand this is not about Hollywood," said NASA Administrator Jim Bridenstine as he opened the sixth International Planetary Defense Conference at the University of Maryland's campus in College Park.

Countries represented include China, France, Germany, Israel, Italy, Russia and the United States.

The idea that the planet Earth may one day have to defend itself against an asteroid used to elicit what experts call a "giggle factor."

But a meteor that blew up in the atmosphere over Russia on February 15, 2013, helped put an end to the sneers.

On that morning, a 65-foot (20-meter) asteroid appear out of nowhere over the southern Urals, exploding 14 miles (23 kilometers) above the town of Chelyabinsk with such force that it shattered the windows of thousands of buildings.

A thousand people were injured by the shards.

But "the positive aspect of Chelyabinsk is that it made the public aware, it made the political decision makers aware," Detlef Koschny, co-manager of the Planetary Defence Office of the European Space Agency (ESA) told AFP.

A meteorite trail is seen above a residential apartment block in the Urals city of Chelyabinsk, on February 15, 2013
A meteorite trail is seen above a residential apartment block in the Urals city of Chelyabinsk, on February 15, 2013

How many?

Only those asteroids whose orbit around our Sun brings them within 31 million miles of our planet—defined as "near Earth"—are of interest.

Astronomers are finding new ones each day: more than 700 so far this year, for a total of 20,001, said Lindley Johnson of NASA's Planetary Defense Coordination Office, which was created in 2016.

Among the most risky is a rock named 2000SG344: 165 feet in diameter, with a one in 2,096 chance in striking the Earth within a hundred years, according to the ESA.

The majority are very small, but 942 are more than 0.6 miles across, estimates astronomer Alan Harris.

The scientist told an audience that some large ones are probably still out there: "A fair fraction of the biggest ones are hiding... basically parked behind the Sun."

They are found mainly by two US telescopes, one in Arizona and the other in Hawaii.

The ESA has built a telescope for this purpose in Spain and is planning others in Chile and Sicily.

Many astronomers are demanding a space telescope because terrestrial telescopes are unable to detect objects on the other side of the Sun.

A view of the facade of a local paint and varnish plant damaged by a shockwave from a meteor in the Urals city of Chelyabinsk on
A view of the facade of a local paint and varnish plant damaged by a shockwave from a meteor in the Urals city of Chelyabinsk on February 15, 2013

Deflecting an asteroid

This week's exercise seeks to simulate global response to a catastrophic meteorite. The first step is aiming telescopes at the threat to precisely calculate its speed and trajectory, following rough initial estimates.

Then it boils down to two choices: try to deflect the object, or evacuate.

If it is less than 165 feet, the international consensus is to evacuate the threatened region. According to Koschny, it is possible to predict the country it will strike two weeks ahead. Days away from impact, it can be narrowed down to within hundreds of kilometers.

What about bigger objects? Trying to nuke them to smithereens like in the movie Armageddon would be bad idea, because it could just create smaller but still dangerous pieces.

The plan, instead, is to launch a device toward the asteroid to divert its trajectory—like a cosmic bumper car.

NASA plans to test this idea out on a real asteroid 492 feet across, in 2022, with the Double Asteroid Redirection Test (DART) mission.

One issue that remains is politics, says Romana Kofler, of the United Nations Office for Outer Space Affairs.

"Who would be the decision making authority?" she asked. "The consensus was to leave this aspect out."

The United Nations Security Council would likely be convened, but it's an open question as to whether rich countries would finance an operation if they themselves weren't in the sights of 2000SG344 or another celestial rock.


Explore further

The day the asteroid might hit

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2019-04-30 07:15:51Z
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'These events are not rare': NASA exercise highlights existential threat of asteroid impacting Earth - New Zealand Herald

It's the doomsday scenario fit for a Hollywood blockbuster — and NASA scientists are about to see it go down.

This week researchers will run an exercise at the 2019 Planetary Defence Conference that will play out a "realistic scenario" of an asteroid flying through space on an impact trajectory with Earth, reports news.com.au

NASA's Planetary Defence Co-ordination Office (PDCO) is running the simulation exercise as part of a recently announced federal "action plan" for defending our planet against asteroid impact.

The hypothetical asteroid is thought to be about 100 to 300 metres in size and only has a very small likelihood of smashing into Earth on April 29, 2027, according to a NASA web page dedicated to the highly detailed scenario.

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Global astronomers are always on the lookout for near-Earth objects (NEOs), which are classified as asteroids and comets that orbit the Sun and come within 50 million kilometres of Earth's orbit.

Along with the NASA unit, the European Space Agency's Space Situational Awareness-NEO Segment and the International Asteroid Warning Network (IAWN) are tasked with hunting the skies for potentially dangerous space rocks.

These "tabletop exercises" are not uncommon and are about walking through the steps that will need to be taken along with governments and emergency agencies to mitigate the risk to society should the unthinkable happen.

"These exercises have really helped us in the planetary defence community to understand what our colleagues on the disaster management side need to know," said Lindley Johnson, NASA's planetary defence officer. "This exercise will help us develop more effective communications with each other and with our governments."

NASA has been tasked with the goal of identifying and tracking 90 per cent of near-Earth meteors that are larger than 140 metres by the year 2020. But the task could end up taking nearly three decades, experts claim. And even then we're far from protected.


Last month, it was revealed a relatively small and undetected meteor blew up over the Bering Sea, off Russia's Kamchatka Peninsula on December 18. The explosion — which happened 25.6 kilometres above the Earth's surface — released 10 times the energy produced by the atomic bomb dropped on Hiroshima in World War II.

Six years ago, a meteor exploded over the Russian city of Chelyabinsk and released a shockwave that shattered thousands of windows and injured more than 1600 people. That meteor was only 19 metres wide.

A meteor streaks through the sky over Chelyabinsk, Russia, in 2013. Photo / AP
A meteor streaks through the sky over Chelyabinsk, Russia, in 2013. Photo / AP

"The thing is the one over Chelyabinsk and this latest one (in December) are about 10 times smaller" that the ones targeted by the NASA mandate, astronomer Alan Duffy explained to news.com.au last month. "It's far harder to detect those, and we still haven't found all the larger asteroids yet."

He has called for more funding to be allocated to monitoring systems, asserting "it is just a matter of time before one of these blasts occur over a city and cause incredible damage".

During a keynote address at the opening of the Planetary Defence Conference, NASA administrator Jim Bridenstine warned preparing for an asteroid impact is something that needs to be taken very seriously.

"We have to make sure that people understand that this is not about Hollywood, it's not about movies. This is about ultimately protecting the only planet we know, right now, to host life, and that is the planet Earth," he said.
"These events are not rare, they happen."

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2019-04-30 06:24:32Z
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Senin, 29 April 2019

What if a killer asteroid were headed toward Earth? NASA plans to find out this week - NBC News

By David Freeman

Think of it as a crash course in averting asteroid crashes.

As part of the 2019 Planetary Defense Conference, NASA, the Federal Emergency Management Agency and their international partners will conduct a so-called tabletop exercise designed to show how they would react to the discovery of a fictional asteroid heading our way.

The exercise is being conducted as part of a federal "action plan" for defending Earth against asteroids that was announced last June. It will play out over the five days of the conference, which begins in College Park, Maryland, on Monday and runs through May 3. You can watch it live in the player below.

"Exercises like this have been run at several conferences over the years, and government agencies have also ​had them," Andrew Rivkin, a planetary astronomer at Johns Hopkins University Applied Physics Laboratory in Laurel, Maryland, and an expert on asteroids, told NBC News MACH in an email. "It's definitely worth doing, if only so people are aware of the issues and how complex some of them are."

Rivkin, who said he was participating in the exercise, likened it to a fire drill but added that the consequences of a major asteroid strike "could be very bad (just ask the dinosaurs)," referring to the impact of a six-mile-wide asteroid that is believed to have caused the dinosaurs' demise some 65 million years ago.

According to the loosely scripted scenario, astronomers discover that a make-believe space rock dubbed 2019 PDC has a one-in-100 chance of smashing into Earth in 2027. Participants in the exercise, including the European Space Agency and the International Asteroid Warning Network, as well as NASA and FEMA, will consider how they might mount space missions to investigate and possibly deflect the asteroid — and how the effects of an impact might be mitigated.

Even though 2019 PDC is fictitious, the threat posed by asteroid strikes is all too real. As of the start of 2019, more than 19,000 near-Earth objects (NEOs) had been discovered — and 30 more are discovered each week as astronomers continue to search for them.

"We've only found about one-third of NEOs large enough to cause severe regional damage, so we have a lot of work left to do," Amy Mainzer, an astronomer and asteroid expert at NASA's Jet Propulsion Laboratory in Pasadena, California, said in an email. "We need to build and operate more capable space- and ground-based telescopes, in my opinion," she added.

The animation depicts a mapping of the positions of known near-Earth objects (NEOs) at points in time over the past 20 years. There are more than 18,000 known NEOs, with new ones being discovered at the rate of about 40 per week.NASA/JPL-Caltech

So far, experts haven't identified any large objects on a collision course with Earth.

"We are confident that searches have found anything big enough to be a worldwide problem," Rivkin said in the email. "The space agencies of the world are working together to complete the search programs to make sure the neighborhood is safe, and NASA is planning a mission called DART [for Double Asteroid Redirection Test] to practice deflecting an asteroid just in case we ever need to do so. We don't anticipate having to do so any time in the foreseeable future, but it's good to be prepared!"

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2019-04-29 16:00:00Z
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Weird Black Hole Is Shooting Out Wobbly Jets Because It's Dragging Spacetime - ScienceAlert

Some 7,800 light-years away, in the constellation of Cygnus, lies a most peculiar black hole. It's called V404 Cygni, and in 2015, telescopes around the world stared in wonder as it woke from dormancy to devour material from a star over the course of a week.

That one event provided such a wealth of information that astronomers are still analysing it. And they have just discovered an amazing occurrence: relativistic jets wobbling so fast their change in direction can be seen in mere minutes.

And, as they do so, they puff out high-speed clouds of plasma.

"This is one of the most extraordinary black hole systems I've ever come across," said astrophysicist James Miller-Jones of the International Centre for Radio Astronomy Research (ICRAR) at Curtin University in Australia.

V404 Cygni is a binary microquasar system consisting of a black hole about nine times the mass of the Sun and a companion star, an early red giant slightly smaller than the Sun.

The black hole is slowly devouring the red giant; the material siphoned away from the star is orbiting the black hole in the form of an accretion disc, a bit like water circling a drain. The closest regions of the disc are incredibly dense and hot, and extremely radiant; and, as the black hole feeds, it shoots out powerful jets of plasma, presumably from its poles.

Scientists don't know the precise mechanism behind jet production. They think material from the innermost rim of the accretion disc is funnelled along the black hole's magnetic field lines, which act as a synchrotron to accelerate the particles before launching them at tremendous velocities.

But V404 Cygni's wobbly jets, shooting out in different directions at different times, on such rapidly changing timescales, and at velocities up to 60 percent of the speed of light, are in a class of their own.

"We think the disc of material and the black hole are misaligned," Miller-Jones said. "This appears to be causing the inner part of the disc to wobble like a spinning top and fire jets out in different directions as it changes orientation."

It's a bit like a spinning top that starts to wobble as it's slowing down, the researchers said. This change in the rotational axis of a spinning body is called precession. In this particular instance, we have a handy explanation for it courtesy of Albert Einstein.

In his theory of general relativity, Einstein predicted an effect called frame-dragging. As it spins, a rotating black hole's gravitational field is so intense that it essentially drags spacetime with it. (This is one of the effects scientists hoped to observe when they took a picture of Pōwehi.)

In the case of V404 Cygni, the accretion disc is about 10 million kilometres (6.2 million miles) across. The misalignment of the black hole's rotational axis with the accretion disc has warped the inner few thousand kilometres of said disc.

The frame-dragging effect then pulls the warped part of the disc along with the black hole's rotation, which sends the jet careening off in all directions. In addition, that inner section of the accretion disc is puffed up like a solid doughnut that also precesses.

"This is the only mechanism we can think of that can explain the rapid precession we see in V404 Cygni," Miller-Jones said.

It's so fast that the usual method radio telescopes use for imaging space were practically useless. Usually, these devices rely on long exposures, observing a region for several hours at a time, moving across the sky to track their target. But in this case, the method produced images too blurred to be of use.

So the team had to use a different method, taking 103 separate images with exposure times of just 70 seconds and stitching them together to create a movie - and sure enough, there were the wibbly wobbly spacetimey jets.

"We were gobsmacked by what we saw in this system - it was completely unexpected," said physicist Greg Sivakoff of the University of Alberta.

"Finding this astronomical first has deepened our understanding of how black holes and galaxy formation can work. It tells us a little more about that big question: 'How did we get here?'"

The research has been published in Nature.

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2019-04-29 15:18:21Z
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Hurricanes rally to defeat Islanders in Game 2, extend series lead - NHL.com

NEW YORK -- The Carolina Hurricanes scored twice in 48 seconds early in the third period, and Curtis McElhinney made 17 saves in relief in a 2-1 win against the New York Islanders in Game 2 of the Eastern Conference Second Round at Barclays Center on Sunday.

The Hurricanes lead the best-of-7 series 2-0 with Game 3 at Carolina on Wednesday.

Warren Foegele scored his Hurricanes-leading fifth goal of the Stanley Cup Playoffs with a wrist shot from the right face-off circle 17 seconds into the third. Nino Niederreiter scored his first on a deflection from the slot at 1:05 to give Carolina a 2-1 lead.

[WATCH: All Hurricanes vs. Islanders highlights | Complete series coverage]

Hurricanes goalie Petr Mrazek, who made 31 saves in Game 1, left the game with a lower-body injury  6:27 into the second period. It appeared he was injured making a save against Leo Komarov at 2:07.

McElhinney, 35, playing for the first time in 22 days, made 10 saves in the second and seven in the third for his first NHL playoff win in three games, all in relief. 

"[McElhinney]'s been great all year, so there was no, 'Oh no, we have to put that guy in,'" Hurricanes coach Rod Brind'Amour said. "It was more, 'This is how this night is going, we're dropping like flies, and now our goalie goes down.' I certainly loved the fact that [McElhinney] was there ready to rock and roll."

Video: CAR@NYI, Gm2: McElhinney makes back-to-back saves

Carolina has won four straight and six of its past seven playoff games.

"I'm not really surprised by our play because we've been playing playoff hockey the entire second half of the season," Foegele said. "This is a real resilient group, and we keep getting injuries each game, but someone else is stepping up, whether that's blocking shots or contributing in some way. This group's real resilient, and I'm really proud of the group."

Niederreiter said, "We had to stick to the game plan, get pucks to the net and traffic in front of their goalie, and that's exactly what we did," 

Mathew Barzal gave the Islanders a 1-0 lead on a power-play goal 13:17 into the first period. Barzal's attempted pass below the left circle to Josh Bailey deflected off the stick of Hurricanes defenseman Jaccob Slavin. The goal ended Mrazek's shutout streak of 135:04, dating to Game 7 of the first round against the Washington Capitals.

Video: CAR@NYI, Gm2: Barzal scores PPG as pass deflects in

"That's the way it goes sometimes," Bailey said. "It could be 2-0 us, but it's 0-2. We can't get down. We still feel good about our group and have confidence that we can turn this around."

Devon Toews thought he gave the Islanders a 2-0 lead with 14 seconds remaining in the second period when his attempt to kick the puck into the slot with his right skate hit McElhinney's left pad and went into the net. The referees ruled no goal because Toews used a distinct kicking motion, and the NHL Situation Room supported the call on the ice. 

"We didn't get any of those [bounces] today," New York defenseman Ryan Pulock said. "We had some pretty good chances to score and it was just millimeters away. But there's a lot of hockey left here. It's just important that we prepare ourselves for Game 3."

Islanders goalie Robin Lehner made 16 saves.

In addition to the Mrazek injury, the Hurricanes lost defenseman Trevor van Riemsdyk (upper body) 32 seconds into the first period and right wing Saku Maenalanen (upper body) 3:03 into the third.

"We have a lot of belief within these walls; we all know the guy next to you is going to give it his all and continue to battle," Slavin said. "It's what we've been all year, a hardworking team. Hopefully we can keep doing that."

Video: CAR@NYI, Gm2: Foegele's blistering wrister ties it

They said it

"I was looking at [Petr Mrazek] and I knew something was up, so I knew I was going in there at that point. You just grab your helmet and go. To go in there without a lot of practice, it does have its challenges, but I felt pretty good getting in there." -- Hurricanes goalie Curtis McElhinney on his relief appearance

"They play very structured. I feel like it's similar to the way we play. You can't let frustration set in. We've found ways to frustrate teams throughout the year and in the playoffs. You can't let them reverse it back on you. You've got to just stick with it, and we will. I'm sure we'll tweak a couple things here and there, but really Game 3 is about finding a way to get the win, first and foremost." -- Islanders left wing Josh Bailey

Need to know 

Injured Hurricanes forwards Andrei Svechnikov (concussion protocol), Micheal Ferland (upper body) and Jordan Martinook (lower body) did not play. ... Carolina took a 2-0 lead on the road in a playoff series for the second time in Hurricanes/Hartford Whalers history. Hartford had a three-game sweep against the Quebec Nordiques in the Adams Division Semifinals in 1986. ... Slavin led all skaters in ice time (27:21). ... Barzal scored his first NHL playoff goal. … Islanders coach Barry Trotz had no update on forward Cal Clutterbuck, who was helped off the ice by teammate Matt Martin after the game ended.

What's next

Game 3 of Eastern Conference Second Round at PNC Arena on Wednesday (7 p.m. ET; NBCSN, CBC, SN, TVAS)

Video: Hurricanes edge Islanders to grab 2-0 series lead



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April 29, 2019 at 05:09AM

Raptors not satisfied with winning, focused on perfecting their game - Sportsnet.ca

GameThread Game #28: Athletics at Blue Jays - Bluebird Banter

Bruins can't overcome mistakes in Game 2 loss to Blue Jackets - NHL.com

"It's on me," Bergeron said. "Obviously, try to avoid that penalty, and that's it."

The penalty, for tripping, came at 2:59 of the second overtime between the Boston Bruins and the Columbus Blue Jackets, a penalty that led to Matt Duchene's game-winner 43 seconds into the power play, allowed the Blue Jackets to touch off a celebration of their 3-2 win, and enabled them to head back to Columbus with the best-of-7 Eastern Conference Second Round tied at 1-1.

[RELATED: Complete Bruins vs. Blue Jackets series coverage]

"Just the stick got caught, obviously," Bergeron said. "It's one of those plays that you make many times and it's not going to happen. But my stick shouldn't be there at this point in the game."

Bergeron had caught Seth Jones by the Columbus crease, with the Blue Jackets' defenseman going down, resulting in a delayed penalty. It was an easy play to point to as one mistake made in a game full of them, and the one most directly responsible for the Bruins' loss. 

But it was far from the only one. 

In the end, the loss might have been as much their own fault as that of the Blue Jackets, a game in which Boston repeatedly sent blind drop passes backward, turned the puck over, and made uncharacteristic errors that led to Columbus chances. 

Video: CBJ@BOS, Gm2: Blue Jackets, Bruins take it to 2OT

So, was it self-inflicted?

"Yeah," Bergeron said. "I think it's a fair assessment. Two penalties and then the other one is, again, something that we can take care of the puck a little better maybe. So, yeah, in a way, it is. That being said, in playoff series it's always about looking forward and making sure that we rectify those things. 

"But a lot of it is about playing smarter."

He wasn't alone in feeling that way.

Game 1 hero Charlie Coyle, who made up for a turnover that led to a goal in that game with two of his own, had another giveaway that directly resulted in a goal in Game 2. 

With the Bruins leading 2-1 in the second period, Coyle made a blind, backhand pass into the slot that was intercepted by Jones. He passed it to Artemi Panarin for the forward's second goal of the game, an impressively angled shot from the bottom of the right circle. 

That tied the game at 8:01. 

"I think everything they got, we gave it to them," Coyle said. "I mean, they worked, obviously. They worked on the power play and the power play turnovers, and they capitalized. Especially a team like that, you give it to them like that and they're going to make you pay, and they did."

Video: CBJ@BOS, Gm2: Panarin roofs second goal of the game

The Blue Jackets' first goal was also the result of a turnover, this one on the power play after a Brad Marchand cross-checking penalty following the end of the first period. That led to a Panarin goal at 1:03 of the second period, equaling the goal by Matt Grzelcyk on the power play at 7:50 of the first. Defenseman Zdeno Chara got the puck and attempted a clear, which landed right on the stick of Cam Atkinson. 

Eight seconds later, the puck would be in the net, courtesy of Panarin. 

It was not the intelligent, smooth, well-oiled hockey that the Bruins have played down the stretch. They exhibited the same tendencies a couple of times in the first round against the Toronto Maple Leafs, but cleaned it up well enough to win Game 6 and 7 and advance.

But it crept back into their play in Game 2 against the Blue Jackets.

"We're forcing plays and not executing the plays that we should," Bruins coach Bruce Cassidy said. "At the end of the day, all three goals they scored, we had the puck at our stick. The PK one we didn't get a clear. … The second one by Panarin, clearly miscommunication, turnover deep in our end, about to go on a power play [a double minor by Josh Anderson for high sticking], and changes momentum. Then the last one, we did have a chance to clear and they kept it in.

"But I thought we cleaned it up after two periods. I thought our overtimes were excellent in terms of how we defended."

Video: Blue Jackets defeat Bruins in 2OT and tie series 1-1

They might have been better, but they weren't good enough. And then, at an inopportune moment, the player least likely to make a mistake made a mistake. 

It's a lesson the Bruins need to learn by Tuesday, when Game 3 looms in Columbus (7 p.m. ET; NBCSN, SN, CBC, TVAS). They need to limit the mistakes, to clean up their act, to stop harming their own cause. 

"If we stay out of the box, play 5-on-5 and take care of the puck, I think we'd give ourselves a better chance," Coyle said. 

Hard to argue with that. 



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