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Keyword: blackhole

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  • Mathematicians Disprove Conjecture Made to Save Black Holes

    05/19/2018 7:14:18 AM PDT · by LibWhacker · 36 replies
    Quanta Magazine ^ | 5/17/18 | Kevin Hartnett
    Nearly 40 years after it was proposed, mathematicians have settled one of the most profound questions in the study of general relativity. In a paper posted online last fall, mathematicians Mihalis Dafermos and Jonathan Luk have proven that the strong cosmic censorship conjecture, which concerns the strange inner workings of black holes, is false.“I personally view this work as a tremendous achievement — a qualitative jump in our understanding of general relativity,” emailed Igor Rodnianski, a mathematician at Princeton University.The strong cosmic censorship conjecture was proposed in 1979 by the influential physicist Roger Penrose. It was meant as a...
  • Astronomers find fastest-growing black hole known in space

    05/15/2018 1:58:52 PM PDT · by Red Badger · 28 replies
    phys.org ^ | May 15, 2018 | Australian National University
    A bright, supermassive black hole. Credit: NASA ______________________________________________________________________________ Astronomers at ANU have found the fastest-growing black hole known in the Universe, describing it as a monster that devours a mass equivalent to our sun every two days. The astronomers have looked back more than 12 billion years to the early dark ages of the Universe, when this supermassive black hole was estimated to be the size of about 20 billion suns with a one per cent growth rate every one million years. "This black hole is growing so rapidly that it's shining thousands of times more brightly than an...
  • Why NASA’s James Webb Space Telescope is such a fiscal black hole

    04/24/2018 10:58:46 AM PDT · by LibWhacker · 45 replies
    The Hill ^ | 4/12/18 | Mark Whittington
    The announcement by NASA that launch of the James Webb Space Telescope is going to be delayed over another year, now May 2020, felt like déjà vu. When the JWST was first proposed in 1997, it was supposed to launch in 2007 and cost half a billion dollars. Now the launch date is 13 years later and the cost is at least $8.8 billion. NASA will have to go back to Congress for more money if the huge space observatory exceeds previous cost caps. In the meantime, NASA is convening an independent review board that will examine the problems that...
  • Astronomers Find Mass Limit for Neutron Stars Before Collapsing Into Black Holes

    01/19/2018 1:38:43 PM PST · by Red Badger · 38 replies
    www.popularmechanics.com ^ | 01/19/2018 | By John Wenz
    These remaining cores of dead stars can only get so massive before they become black holes. _______________________________________________________________________________________________________________________________________ The subtle difference between when a massive dying star compresses into a core and when it collapses entirely may have been found. In a study published in Astrophysical Journal Letters, researchers at the Goethe University in Frankfurt say they’ve found the dividing line between compact objects called neutron stars and black holes. When a massive star reaches the end of its life, it goes out with an immense bang called a supernova. From there, one of two known things Can happen: it either...
  • In 2018, we will see a black hole for the first time ever

    12/19/2017 3:38:07 AM PST · by Libloather · 59 replies
    Fox News ^ | 12/18/17 | Jamie Seidel
    We're about to see — for the very first time — the event horizon of a black hole, proving beyond any last vestige of doubt that Einstein’s interstellar monsters are real. And here’s what it will look like.
  • Obama Compares President Trump To Hitler, Says ‘America Is Heading Towards Genocide’

    12/07/2017 2:37:58 PM PST · by davikkm · 51 replies
    IWB ^ | Chris Black
    Former president Barack Obama gave recently a very friendly interview to CBS News’ financial analyst Mellody Hobson which went under mainstream media’s radar for obvious reasons. During the interview, Barry suggested that that what happened in Nazi Germany almost one hundred years ago could very well happen now in America, under Donald Trump’s regime, because…well, I don’t really know, feelings maybe? Barack Obama also blathered something about an American genocide, and unfortunately for him, his caustic remarks were immortalized by Greg Hinz, Crain’s Chicago Business political columnist, as former POTUS was delivering a speech to the Economic Club of Chicago....
  • LIGO Sees Smallest Black Hole Binary Yet

    11/18/2017 4:40:58 PM PST · by Lonesome in Massachussets · 21 replies
    Sky & Telescope ^ | November 16, 2017 | Camille M. Carlisle
    On November 15th, five months after the spacetime ripples jiggled LIGO’s instruments, astronomers announced the detection of their sixth gravitational-wave discovery, which is the fifth from the merger of two black holes. The event, GW170608, came from the union of the smallest black holes scientists have yet “seen” using this technique. The waves hit LIGO at 02:01:16 Universal Time on June 8th, during the project’s second observing run (November 30th to August 25th). Their passage triggered the alarm at the site in Livingston, Louisiana, but the detector in Hanford, Washington, was under routine maintenance and had its alert system turned...
  • 2 Neutron Stars Collided, So Are They a Black Hole Now?

    10/17/2017 11:50:49 AM PDT · by BenLurkin · 8 replies
    Space.com ^ | October 16, 2017 | Harrison Tasoff,
    The observations indicate that the waves and light came from a pair of merging neutron stars about 130 million light-years away, according to a news conference on Monday Oct. 16, 2017. Neutron stars are the incredibly dense remnants of stars that have exploded in supernovas. The two that merged were 1.6 and 1.1 times as massive as our sun, but each was no wider than Washington, D.C., according to a statement by the Space Telescope Science Institute. As the stars spiraled into each other, they sent gravitational waves through the universe and released tremendous amounts of light when they finally...
  • LIGO and Virgo observatories jointly detect black hole collision [Gravitational Waves]

    09/27/2017 10:32:15 AM PDT · by C19fan · 14 replies
    National Science Foundation ^ | September 27, 2017 | Staff
    In August, detectors on two continents recorded gravitational wave signals from a pair of black holes colliding. This discovery, announced today, is the first observation of gravitational waves by three different detectors, marking a new era of greater insights and improved localization of cosmic events now available through globally networked gravitational-wave observatories. The collision was observed Aug. 14 at 10:30:43 a.m. Coordinated Universal Time (UTC) using the two National Science Foundation (NSF)-funded Laser Interferometer Gravitational-Wave Observatory (LIGO) detectors located in Livingston, Louisiana, and Hanford, Washington, and the Virgo detector, funded by CNRS and INFN and located near Pisa, Italy.
  • Massive black hole discovered near heart of the Milky Way

    09/05/2017 3:47:40 PM PDT · by LibWhacker · 25 replies
    The Guardian ^ | 9/4/17 | Ian Sample
    Astronomers find evidence of enormous black hole one hundred thousand times more massive than the sun in a gas cloud near the galaxy’s centre If confirmed, the black hole will rank as the second largest black hole ever seen in the Milky Way after the supermassive black hole known as Sagittarius A*. An enormous black hole one hundred thousand times more massive than the sun has been found hiding in a toxic gas cloud wafting around near the heart of the Milky Way. If the discovery is confirmed, the invisible behemoth will rank as the second largest black hole ever...
  • Boom! Powerful Cosmic Explosion May Hint at How Black Holes Form

    07/26/2017 5:53:39 PM PDT · by BenLurkin · 6 replies
    Space.com ^ | July 26, 2017 | Elizabeth Howell
    Two key findings emerged from the observations, gathered using several ground- and space-based telescopes. The first step was better model what happens as the dying star collapses. The data suggests that the black hole creates a strong magnetic field that initially overwhelms jets of matter and energy formed because of the explosion. Then, the magnetic field breaks down, the study authors said. In the next phase, the magnetic field diminishes, allowing matter to dominate the jets. Before, scientists thought that jets could be dominated only by the magnetic field or matter — not both. Another insight concerns what kind of...
  • REPORT: $12.7 Trillion Needed To Meet Paris Climate Accord’s Goal

    06/15/2017 11:38:05 AM PDT · by ForYourChildren · 43 replies
    The Daily Caller ^ | 06/15/2017 | Michael Bastasch
    A whopping $7.4 trillion will be spent globally on new green energy facilities in the coming decades, but another $5.3 trillion is needed to meet the goals of the Paris climate accord, according to a new report. Bloomberg New Energy Finance (BNEF) is out with a new long-term energy outlook report, this time projecting a total of $12.7 trillion to keep projected global warming below 2 degrees Celsius by the end of the century — a goal of the Paris accord. BNEF projects $7.4 trillion will be invested in new green energy capacity by 2040, and that global carbon dioxide...
  • Star Should Have Gone Supernova, But it Imploded Into a Black Hole Instead

    05/28/2017 8:03:23 AM PDT · by BenLurkin · 19 replies
    universetoday.com ^ | 05/27/2017 | Matt Williams
    A major implication of this study is the way it could shed new light on the formation of very massive black holes. For some time now, astronomers have believed that in order to form a black hole at the end of its life cycle, a star would have to be massive enough to cause a supernova. But as the team observed, it doesn’t make sense that a star would blow off its outer layers and still have enough mass left over to form a massive black hole. As Christopher Kochanek – a professor of astronomy at The Ohio State University,...
  • What Happens When A Black Hole's Singularity Evaporates?

    05/22/2017 9:32:26 AM PDT · by MtnClimber · 17 replies
    Forbes ^ | 20 May, 2017 | Ethan Siegel
    It's hard to imagine, given the full diversity of forms that matter takes in this Universe, that for millions of years, there were only neutral atoms of hydrogen and helium gas. It's perhaps equally hard to imagine that someday, quadrillions of years from now, all the stars will have gone dark. Only the remnants of our now-vibrant Universe will be left, including some of the most spectacular objects of all: black holes. But even they won't last forever. David Weber wants to know how that happens for this week's Ask Ethan, inquiring: What happens when a black hole has lost...
  • Earth-Sized Telescope Just Took The First-Ever Photo Of A Black Hole

    04/16/2017 8:16:48 PM PDT · by DUMBGRUNT · 50 replies
    Tech Times ^ | 15 Apr 2017 | Katrina Pascual
    Earth-Sized Telescope Just Took The First-Ever Photo Of A Black Hole: How It Will Test Theory Of Relativity Ten nights of staunch observation may have led astronomers to successfully peer inside a black hole and take an image of its event horizon, or its point of no return. Einstein’s theory notes that all the information crossing a black hole’s event horizon gets lost forever. Yet according to quantum mechanics, information can never be lost. Despite the long wait and other external factors, the team remains optimistic. Falcke said that even if the images emerge as “crappy and washed out,” they...
  • Astronomers close in on first direct view of a black hole

    04/05/2017 2:06:13 PM PDT · by Red Badger · 34 replies
    www.theglobeandmail.com ^ | Apr. 05, 2017 9:14AM EDT | Ivan Semeniuk - SCIENCE REPORTER
    If Avery Broderick’s wishes come true, the next 10 days will bring something new to humanity’s view of the universe. For the first time, the University of Waterloo physicist says, there could be “visceral, direct evidence that there are monsters in the night.” The monsters Dr. Broderick has in mind are supermassive black holes: terrifying giants that lurk in the hearts of galaxies, including our own, where they can devour stars and interstellar gas like cosmic vacuum cleaners. Fortunately, Earth is in no danger of encountering such a lethal entity. The nearest one is at least 25,000 light years away...
  • CNN host who asked if black hole sucked in lost plane questions Sean Spicer’s smarts

    03/18/2017 7:55:43 PM PDT · by SoFloFreeper · 29 replies
    twitter via twitchy ^ | March 17, 2017 | twitter via Greg P via twitchy
    ...Lemon was criticizing the White House press secretary for the way he answered a question on the president and wiretapping during the daily press briefing.... Now, remember back in 2014 when Don Lemon asked if a black hole was responsible for the disappearance of Malaysia Airlines flight 370? We do:
  • Astronomers Just Found a Star Orbiting a Black Hole at 1 Percent the Speed of Light

    03/16/2017 10:49:42 AM PDT · by C19fan · 46 replies
    Science Alert ^ | March 15, 2017 | Mike McRae
    Astronomers have just spotted a star whizzing around a vast black hole at about 2.5 times the distance between Earth and the Moon, and it takes only half an hour to complete one orbit. To put that into perspective, it takes roughly 28 days for our Moon to do a single lap around our relatively tiny planet at speeds of 3,683 kilometres (2,288 miles) per hour, meaning this star is moving at some mind-boggling, break-neck speeds.
  • Stray Black Hole Turned Cosmic Gas Cloud into Speeding 'Bullet'

    02/12/2017 10:30:51 AM PST · by ETL · 89 replies
    Space.com ^ | February 8, 2017 | Samantha Mathewson, Space.com Contributor
    A stray black hole may be responsible for turning a gas cloud into a speeding cosmic bullet trillions of miles long. The wandering black hole was discovered lurking just outside a supernova remnant, a shell of expelled material left behind after a massive star explodes. Using the Atacama Submillimeter Telescope Experiment (ASTE) in Chile and the 45-meter (148 feet) Radio Telescope at Nobeyama Radio Observatory, astronomers found that the black hole had been previously hidden by a compact gas cloud emerging from the remnant. The cloud itself has now been named "the Bullet," because of its long, cone shape and...
  • Quiet black hole may be lurking in cosmic 'bullet'

    02/06/2017 5:58:14 PM PST · by MtnClimber · 12 replies
    Cosmos ^ | 6 Feb, 2017 | BELINDA SMITH
    A chance observation in a corner of the Milky Way galaxy could hint at a hidden black hole. A cloud travelling in a corner of our galaxy at a blistering 100 kilometres per second likely harbours a black hole, according to Japanese astronomers. Masaya Yamada and colleagues from Keio University mapped the motion and appearance of the fast-moving feature – nicknamed the "Bullet" – and concluded that its shape and velocity can be attributed to a black hole hiding within. The work, which was published in The Astrophysical Journal, outlines one of only a few such "quiet" black holes found...