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E.g., 04/25/2019
E.g., 04/25/2019
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  • galaxy M87
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Your search has returned 1515 articles:
  • News

    The M87 black hole image showed the best way to measure black hole masses

    The measure of a black hole is what it does with its stars.

    That’s one lesson astronomers are taking from the first-ever picture of a black hole, released on April 10 by an international telescope team (SN Online: 4/10/19). That image confirmed that the mass of the supermassive black hole in the center of galaxy M87 is close to what astronomers expected from how nearby stars orbit —...

    04/22/2019 - 06:00 Physics, Astronomy
  • News

    The first type of molecule to form in the universe has been seen in space

    Helium hydride ions, thought to be the first type of molecule to form in the universe, have finally been spotted in space.

    These charged molecules, each made of a neutral helium atom and a positively charged hydrogen atom, first emerged within about 100,000 years after the Big Bang. Back then, the universe was composed almost entirely of hydrogen and helium, and helium hydride was the...

    04/17/2019 - 13:00 Chemistry, Astronomy
  • Context

    Black hole image validates imagining the unimaginable

    Black holes capture everything they encounter. From subatomic particles to stars, solids, gases, liquids and even light, everything falls irretrievably in. And even more assuredly, black holes capture the popular imagination.Thinking about space, as humans have since they first gazed at the points of light decorating the nighttime sky, triggers the mind to imagine things that cannot be...

    04/12/2019 - 06:00 History of Science, Astronomy
  • The Science Life

    Meet one of the first scientists to see the historic black hole image

    It’s hard to say which scientist was the first to set eyes on the glowing ring that makes up the world’s first image of a black hole. But astrophysicist Kazunori Akiyama was certainly one of the earliest.

    The image, released to the public on April 10, revealed the dark shadow of the supermassive black hole encircled by swirling gas at the center of the galaxy M87 (SN Online: 4/10/19)....

    04/11/2019 - 16:02 Astronomy, Physics
  • News

    How scientists took the first picture of a black hole

    Black holes are extremely camera shy. Supermassive black holes, ensconced in the centers of galaxies, make themselves visible by spewing bright jets of charged particles or by flinging away or ripping up nearby stars. Up close, these behemoths are surrounded by glowing accretion disks of infalling material. But because a black hole’s extreme gravity prevents light from escaping, the dark...

    04/10/2019 - 09:57 Astronomy, Physics, Technology
  • News

    All you need to know about the history of black holes

    Black holes have been beguiling from the very beginning.

    Hinted at as early as the 1780s and predicted by Einstein’s general theory of relativity, they didn’t get the name we know today until the 1960s. Bizarre beasts that squash gobs of matter into infinitely dense abysses, black holes were once thought to be merely a mathematical curiosity.

    But astronomers tallied up evidence for...

    04/10/2019 - 09:14 Astronomy, Physics
  • News

    The first picture of a black hole opens a new era of astrophysics

    Editor's note: This story will be updated throughout the day as more information becomes available. 

    This is what a black hole looks like.

    A world-spanning network of telescopes called the Event Horizon Telescope zoomed in on the supermassive monster in the galaxy M87 to create this first-ever picture of a black hole.

    “We have seen what we thought was unseeable. We have seen...

    04/10/2019 - 09:10 Astronomy, Physics
  • Editor's Note

    The delight of discovering an asteroid that spits

    These are wondrous times for space exploration. Just when you think exploring the cosmos couldn’t possibly get more fun, another discovery delivers a new “oh wow” moment.

    Consider the asteroid Bennu. It’s an unprepossessing space rock that drew scientists’ curiosity because it is among the most pristine objects in our solar system, and it might provide clues to the origins of life....

    04/07/2019 - 07:15 Science & Society, Astronomy, Planetary Science
  • News

    This planetary remnant somehow survived the death of its sun

    Against all odds, a small planetary body called a planetesimal has survived the infernal death of its sunlike star and now orbits the white dwarf that remains.

    When most planet-hosting stars run out of hydrogen fuel, they blow out their outer shells of gas, obliterating anything within their inner solar systems and leaving behind a dead star called a white dwarf. Planets orbiting farther...

    04/04/2019 - 14:00 Exoplanets, Planetary Science, Astronomy
  • News in Brief

    The LIGO and Virgo gravitational wave detectors are back on

    It’s open season in scientists’ hunt for gravitational waves.

    A trio of detectors are back on the lookout for the ripples in spacetime. And the newly souped-up machines could make this the most productive search yet.

    The two detectors of the Advanced Laser Interferometer Gravitational-Wave Observatory, LIGO, located in Hanford, Wash., and Livingston, La., and the Virgo detector,...

    04/01/2019 - 11:22 Physics, Astronomy