- Speaker Johnson’s ‘Whirlwind’ First Full Week Marked By Santos Expulsion Vote, Doomed Israel Aid Bill And Fundraising Gaffe Forbes
- GOP Rep.: Mike Johnson brought ‘sense of peace’ to House Republicans Business Insider
- Mike Johnson and Mitch McConnell are on a collision course The Washington Post
- Ukraine, Israel Have Biden, Speaker Johnson on Collision Course Bloomberg
- Rep. Sherrill: Johnson shows ‘lack of understanding’ of how ‘Congress really works’ with aid bill MSNBC
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Tag Archives: doomed
New Yorker: An ex-OceanGate employee once sent an ominous email raising safety concerns about the doomed Titan submersible – CNN
- New Yorker: An ex-OceanGate employee once sent an ominous email raising safety concerns about the doomed Titan submersible CNN
- Titan submersible may have tried to resurface before tragedy NewsNation Now
- Stockton Rush deliberately structured OceanGate’s Titanic operations to be outside US jurisdiction, says former employee: report Yahoo News
- Report: Ex-OceanGate employee sent email warning about doomed submersible CNN
- OceanGate’s approach to engineering was ‘ad hoc’ and ‘ultimately inappropriate,’ says former consultant Business Insider India
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OceanGate CEO seen on 2021 video admitting ‘I’ve broken some rules’ to build doomed Titan submersible – Fox Business
- OceanGate CEO seen on 2021 video admitting ‘I’ve broken some rules’ to build doomed Titan submersible Fox Business
- A man who signed up to be on board the Titan said he pulled out because it didn’t seem like a ‘professional diving operation’ Yahoo News
- Lost Titanic Submersible’s Company Got $450,000 in PPP Loans The Daily Beast
- “I’ve broken some rules to make this” – OceanGate CEO speaking on Titan KIRO Seattle
- Analysis-Titanic sub: victims’ families could still sue despite liability waivers Yahoo News
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Stephen Hawking’s famous theory of how black holes die could mean our entire universe is doomed to evaporate, a new study found – Yahoo! Voices
- Stephen Hawking’s famous theory of how black holes die could mean our entire universe is doomed to evaporate, a new study found Yahoo! Voices
- Everything in the Universe Is Doomed To Evaporate – Hawking’s Radiation Theory Isn’t Limited to Black Holes SciTechDaily
- The universe is evaporating right in front of our eyes, finds major new study indy100
- Stephen Hawking’s most famous prediction could mean that everything in the universe is doomed to evaporate, new study says Yahoo Life
- Hawking was right: All large objects will eventually evaporate Interesting Engineering
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Stephen Hawking’s famous theory of how black holes die could mean our entire universe is doomed to evaporate, a new study found – Yahoo! Voices
- Stephen Hawking’s famous theory of how black holes die could mean our entire universe is doomed to evaporate, a new study found Yahoo! Voices
- Stephen Hawking’s most famous prediction could mean that everything in the universe is doomed to evaporate, new study says Livescience.com
- Everything in the Universe Is Doomed To Evaporate – Hawking’s Radiation Theory Isn’t Limited to Black Holes SciTechDaily
- The universe is evaporating right in front of our eyes, finds major new study indy100
- Hawking was right: All large objects will eventually evaporate Interesting Engineering
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Are Leeds United DOOMED to get relegated!? ⬇️ Danny Mills says the club is BANG in trouble! – talkSPORT
- Are Leeds United DOOMED to get relegated!? ⬇️ Danny Mills says the club is BANG in trouble! talkSPORT
- How Trent Alexander-Arnold In Midfield Makes Liverpool Better Both Offensively And Defensively Sports Illustrated
- Leeds United v. Liverpool | PREMIER LEAGUE HIGHLIGHTS | 4/17/2023 | NBC Sports NBC Sports
- Debate: Can Liverpool pull off Champions League qualification despite nightmare season? Goal.com
- Liverpool fortunate to not have goal against Leeds ruled out after apparent handball, says Ben Mee Daily Mail
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Astronomers identify 1st twin stars doomed to collide in kilonova explosion
Although massive stars usually die with spectacular explosions, a handful fizzle out like dud firecrackers.
Astronomers have identified the remnants of one such dud firecracker in SGR 0755-2933, a neutron star about 11,400 light-years from Earth in the southern constellation of Puppis. In new research, scientists say that earlier in its lifetime, this star transferred abnormally high amounts of mass to its binary companion — so much so that it was not left with enough material for an explosive death. Instead, it ended in a quiet “ultra-stripped” supernova, a rare cosmic event that leaves a super-dense remnant called a neutron star in its wake.
“This remarkable binary system is essentially a one-in-10-billion system,” André-Nicolas Chené, an astronomer at the National Science Foundation’s NOIRLab research center and a co-author of the new study, said in a statement.
Related: Right place, right time: Hubble telescope captured a supernova as it exploded
The neutron star and its closely orbiting binary companion — a star that the researchers also predict will someday collapse to become a neutron star — mark the first clear example of a star system that will ultimately trigger a kilonova, a cosmic explosion during which two neutron stars merge.
Although a kilonova was first detected in 2017, astronomers then recorded only the aftermath of the event, thanks to observations of light and gravitational waves. The new research is the first time scientists have identified a binary star system that they know will end in a kilonova explosion.
Moreover, astronomers previously thought that only one or two such systems would exist in spiral galaxies like our Milky Way. Researchers of the latest study have now increased that estimate to 10, noting that these observations help them better understand the history, evolution and atypically calm deaths of stars in such systems.
“For quite some time, astronomers speculated about the exact conditions that could eventually lead to a kilonova,” Chené said in the statement. “These new results demonstrate that, in at least some cases, two sibling neutron stars can merge when one of them was created without a classical supernova explosion.”
The sibling star is massive, orbits the primary neutron star every 60 days, and has a name like a license plate: CPD-29 2176. Scientists behind the latest research studied this sibling star to understand the formation of the current star system, as well as what might unfold in its future.
“This is not just a simple binary system”
Clarissa Pavao, an undergraduate student at the Embry-Riddle Aeronautical University in Arizona, found the system while scouring data captured by the Cerro Tololo Inter-American Observatory in Chile. In particular, she was plotting the spectra of the sibling star, an analysis of how much light a star emits at particular wavelengths. After cleaning noise from the data, she noticed one simple line in the spectra that suggested the massive star had a highly circular orbit — an unusual feature in binary star systems.
This was a key finding that helped the team conclude that the primary neutron star ended as a dud supernova, the astronomers said.
Usually, when one of the stars in a binary system burns through its hydrogen and nears the end of its main-sequence stage, it begins transferring mass to its companion star. The resulting end-of-life explosion often kicks companion stars out of the systems and into highly elliptical orbits.
But this did not seem to have occurred in the intriguing system. To better understand what might have happened at the end of SGR 0755-2933’s life, astronomers waded through thousands of models that described binary star systems resembling the one they were studying. They only found two that matched.
The team then traced the star’s history and concluded it behaved, for the most part, like any other massive star running out of fuel: Toward the end of its life, the star began transferring mass to its companion and dwindled into a low-mass star with a helium core, as scientists expected. In this process, however, the star lost so much mass that its end-of-life supernova “didn’t even have enough energy to kick the orbit into the more typical elliptical shape seen in similar binaries,” Noel Richardson, an astronomer at Embry-Riddle and lead author of the new study, said in a statement.
The dying star also did not have enough energy to kick its companion out of the system, which is why the two stars continue to have tight orbits, according to the study.
In addition to learning more about kilonova events, the new research will help astronomers better understand the origins of some of the heaviest elements in our universe.
The quiet supernova occurred only a few million years ago, and astronomers expect the CPD-29 2176 system to remain as it is for at least one million years more. Their models show that, much like the primary neutron star, the sibling star too will then become an ultra-stripped supernova and eventually collapse into a neutron star.
Millions of years from now, the team predicts that the two neutron stars will spiral slowly toward each other in a cosmic dance, ultimately colliding in a kilonova explosion. Such explosions are known to be a source of immense quantities of heavy elements like platinum, xenon, uranium and gold “that get hurled into the universe,” Richardson said.
Astronomers have long suspected that heavy metals released during such events hovered in the interstellar medium until they coalesced into asteroids, which then bombarded Earth as it formed and deposited the precious metals we see today. The 2017 kilonova event alone sent at least 100 Earth’s worth of precious heavy metals out there, so it looks like a failed supernova isn’t such a loss to the universe after all.
The research is described in a paper (opens in new tab) published Wednesday (Feb. 1) in the journal Nature.
Follow Sharmila Kuthunur on Twitter @Sharmilakg. Follow us on Twitter @Spacedotcom and on Facebook.
Nepal plane crash: Passenger video appears to show harrowing final moments of doomed flight
A cellphone video taken by a passenger on the Yeti Airlines plane that crashed in Nepal appears to show the harrowing final moments of the flight.
Indian national Sonu Jaiswal, who was traveling with three friends, seemed happy and calm as he pointed his phone camera out the plane window and around the cabin. But after a sudden jolt, the camera shot goes unsteady. Within seconds, smoke obscures the view and there’s a sense of chaos as people scream and the screen fills with flames. It appears to confirm there was no indication of a warning before the crash.
Indian police have confirmed the identity of the passengers seen in the video, but the authenticity of the full video and everything it shows remained unclear on Monday.
The Yeti Airlines ATR 72-500 turboprop aircraft was flying from India to Nepal when it went down suddenly on approach to a newly opened airport in the city of Pokhara. It is believed that all 72 people aboard the flight were killed.
Yeti Airlines confirmed that the flight data and cockpit voice recorders — the so-called black boxes — were found on Monday, a day after the plane went down, which could help determine a cause for the crash.
Dhirendra Pratap Singh, an inspector at the Bersar Police Station in India, the town in which the four Indian victims of the crash lived, told CBS News’ Arshad Zargar that he’d met with the four men’s families and confirmed their identities from the video.
It remained unclear however, how the video, which Singh said was shot by Jaiswal, got onto social media on Monday, where it spread quickly. There were reports that it was either livestreamed on Facebook, or found on a phone that somehow survived the crash.
Singh could not clarify that part of the story to CBS News, and said he couldn’t say whether the video had been altered in any way.
In the first part of the video, Jaiswal captured images of the plane making what seemed to be a routine descent, with recognizable buildings and roads of Pokhara below.
A witness who recorded video of the plane’s descent from the ground said it looked like a normal landing until the plane suddenly turned sharply to the left.
“I saw that, and I was shocked,” Diwas Bohora told The Associated Press. “I thought that today everything will be finished here after it crashes, I will also be dead.”
He said the ground shook violently and flames shot up from the scene of the crash not far from where he stood.
“Seeing that scene, I was scared,” he said.
Doomed Pair Closer Than Ever Observed
New observations and analysis reveal two Goliath black holes just 750 light-years apart and closing, as they circle each other in the aftermath of a galaxy merger.
Astronomers from Flatiron Institute and their colleagues have spotted two ghostly Goliaths en route to a cataclysmic meeting. The newfound pair of supermassive black holes are the closest to colliding ever seen, the astronomers announced on January 9 at an American Astronomical Society meeting in Seattle and in a paper published in The Astrophysical Journal Letters.
While close together in cosmological terms at just 750 light-years apart, the supermassive black holes won’t merge for a few hundred million years. In the meantime, the astronomers’ discovery provides a better estimate of how many supermassive black holes are also nearing collision in the universe.
That improved head count will aid scientists in listening for the universe-wide chorus of intense ripples in space-time known as
The short distance between the newly discovered black holes “is fairly close to the limit of what we can detect, which is why this is so exciting,” says study co-author Chiara Mingarelli, an associate research scientist at the Flatiron Institute’s Center for Computational Astrophysics in New York City.
Due to the small separation between the black holes, the astronomers could only differentiate between the two objects by combining many observations from seven telescopes, including
The astronomers found the pair quickly once they started looking, which means that close-together supermassive black holes “are probably more common than we think, given that we found these two and we didn’t have to look very far to find them,” Mingarelli says.
The newly identified supermassive black holes inhabit a mash-up of two galaxies that collided around 480 million light-years away from Earth. Gargantuan black holes live in the heart of most galaxies, growing bigger by gobbling up surrounding gas, dust, stars, and even other black holes. The two supermassive black holes identified in this study are true heavyweights: They clock in at 200 million and 125 million times the mass of our sun.
The black holes met as their host galaxies smashed into each other. Eventually they will begin circling each other, with the orbit tightening as gas and stars pass between the two black holes and steal orbital energy. Ultimately the black holes will start producing gravitational waves far stronger than any that have previously been detected, before crashing into each other to form one jumbo-size
This artist’s conception shows a late-stage galaxy merger and its two newly-discovered central black holes. The binary black holes are the closest together ever observed in multiple wavelengths. Credit:
“It’s important that with all these different images, you get the same story — that there are two black holes,” says Mingarelli, when comparing this new multi-observation research with previous efforts. “This is where other studies [of close-proximity supermassive black holes] have fallen down in the past. When people followed them up, it turned out that there was just one black hole. [This time we] have many observations, all in agreement.”
She and Flatiron Institute visiting scientist Andrew Casey-Clyde used the new observations to estimate the universe’s population of merging supermassive black holes, finding that it “may be surprisingly high,” Mingarelli says. They predict that an abundance of supermassive black-hole pairs exists, generating a major amount of ultra-strong gravitational waves. All that clamor should result in a loud gravitational-wave background far easier to detect than if the population were smaller. The first ever detection of the background babble of gravitational waves, therefore, may come “very soon,” Mingarelli says.
Reference: “UGC 4211: A Confirmed Dual Active Galactic Nucleus in the Local Universe at 230 pc Nuclear Separation” by Michael J. Koss, Ezequiel Treister, Darshan Kakkad, J. Andrew Casey-Clyde, Taiki Kawamuro, Jonathan Williams, Adi Foord, Benny Trakhtenbrot, Franz E. Bauer, George C. Privon, Claudio Ricci, Richard Mushotzky, Loreto Barcos-Munoz, Laura Blecha, Thomas Connor, Fiona Harrison, Tingting Liu, Macon Magno, Chiara M. F. Mingarelli, Francisco Muller-Sanchez, Kyuseok Oh, T. Taro Shimizu, Krista Lynne Smith, Daniel Stern, Miguel Parra Tello and C. Megan Urry, 9 January 2023, The Astrophysical Journal Letters.
DOI: 10.3847/2041-8213/aca8f0
Doomed exoplanet will be obliterated as it spirals into a star
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Astronomers have come across an exoplanet with a gloomy future, spiraling closer to its host star until eventually it will be obliterated.
The exoplanet, called Kepler-1658b, was identified in 2019, a decade after the Kepler Space Telescope discovered it as a planet candidate.
The planet is considered to be a “hot Jupiter,” or a type of exoplanet similar in size to Jupiter — but scorching in temperature. Kepler-1658b closely orbits its aging star, completing a single orbit every 3.85 days.
But the orbit is decaying, causing the planet to move incrementally closer to its star. Eventually, this movement will lead to a collision and the planet’s obliteration. The Astrophysical Journal Letter published a study detailing the findings on Monday.
“We’ve previously detected evidence for exoplanets inspiraling toward their stars, but we have never before seen such a planet around an evolved star,” said lead study author Shreyas Vissapragada, a 51 Pegasi b fellow at the Center for Astrophysics | Harvard & Smithsonian, in a statement.
“Theory predicts that evolved stars are very effective at sapping energy from their planets’ orbits, and now we can test those theories with observations.”
After years of observations with both space and ground-based telescopes, researchers calculated that the planet’s orbit is decreasing at a rate of 131 milliseconds per year. The telescopes watched for dips in brightness of the star as the planet passed in front of it. The intervals between these dips, called transits, have steadily decreased as the orbit has decayed.
Tidal interactions, or the gravitational relationship between Kepler-1658b and its star, are to blame for the planet’s inward draw. Astronomers are still learning about the gravitational interactions between orbiting bodies, such as Earth and the moon, but this planetary system could shed light on such dynamics.
The new research also helped researchers potentially explain why Kepler-1658b seems even hotter and brighter than expected. The same gravitational tug between the planet and its star may also be releasing extra energy from the planet.
“What we realized during this study is that the planet could be bright because it’s much hotter than previously anticipated, which could happen if the same effects driving the decay of the planet’s orbit are also heating it up,” Vissapragada said in an email. “I’m excited to study this possibility further: are we witnessing the last breath of a condemned planet?”
It’s not unlike Jupiter’s moon Io, the most volcanic place in our solar system. Jupiter’s strong gravitational influence is melting Io’s interior, causing lava to erupt from hundreds of volcanoes on this moon’s surface. The Juno mission will conduct multiple flybys of Io in the next year and a half to learn more about this volatile relationship.
Meanwhile, the aging star that Kepler-1658b orbits is expanding and entering its subgiant phase before becoming a red giant, a dying star in the final stages of life. The findings could potentially preview the fate of planets in our own solar system that may one day find themselves too close to the sun.
“In five billion years or so, the sun will evolve into a red giant star,” Vissapragada said. “It seems certain that Mercury and Venus will be engulfed during this process, but what happens to the Earth is less clear.”
Researchers believe more exoplanets are in danger of dying in the fiery light of their respective host stars, and observations of them may be right around the corner using TESS, or the Transiting Exoplanet Survey Satellite, which studies the light of nearby stars.
“The Kepler-1658 system can serve as a celestial laboratory in this way for years to come,” Vissapragada said, “and with any luck, there will soon be many more of these labs.”