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E.g., 04/20/2019
E.g., 04/20/2019
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  • helium hyrdide ion
  • meteor
  • moon
Your search has returned 3006 articles:
  • 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
  • News

    A 2014 meteor may have come from another solar system

    Earth may already have been visited by an object from outside our solar system — a meteor that burned up in the planet’s atmosphere in 2014, astronomers claim. If confirmed, it would be the first known interstellar object to have entered the atmosphere.

    The first interstellar visitor known to have come close to Earth was the roughly 400-meter-wide asteroid named ‘Oumuamua. It swooped...

    04/16/2019 - 14:29 Planetary Science
  • News

    Meteor showers dig up water on the moon

    Meteor showers bring moon geysers. A lunar orbiter spotted extra water around the moon when the moon passed through streams of cosmic dust that can cause meteor showers on Earth.

    The water was probably released from lunar soil by tiny meteorite impacts, planetary scientist Mehdi Benna of NASA Goddard Space Flight Center in Greenbelt, Md., and colleagues report April 15 in in Nature...

    04/15/2019 - 13:14 Planetary Science
  • News in Brief

    Saturn’s moon Titan sports phantom hydrocarbon lakes

    Three lakes on Saturn’s moon Titan have up and vanished.

    Researchers previously had seen evidence that Titan’s lakes, filled with hydrocarbons like methane and ethane, shrink during the moon’s summer. But a new analysis of data from the defunct Cassini spacecraft offers the first glimpse of lakes completely disappearing off the face of the moon. The discovery of these phantom lakes...

    04/15/2019 - 11:00 Planetary Science
  • 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
  • News in Brief

    Israel’s first moon mission lost moments before landing

    Israel’s first lunar lander, Beresheet, appears to have crash-landed on the moon.

    The spacecraft, launched by the Israeli nonprofit SpaceIL, was scheduled to touch down on the lunar surface on April 11. But in the final few minutes of its descent, the spacecraft’s engine stalled. Mission control reset Beresheet to bring its engine back online, but then communication with the lander cut...

    04/11/2019 - 17:06 Planetary Science
  • 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