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E.g., 07/16/2019
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  • composite image of 2017 total solar eclipse
Your search has returned 3037 articles:
  • News

    The cosmic ‘Cow’ may be a strange supernova

    The cosmic oddity known as the Cow may have been a dying star that shed its skin like a snake before it exploded.

    Newly released observations support the idea that the burst occurred in a dense environment with strong magnetic fields, astronomer Kuiyun Huang and colleagues report in The Astrophysical Journal Letters June 12.

    These new measurements “for the mysterious transient …...

    06/21/2019 - 10:54 Astronomy
  • Letters to the Editor

    Readers boggled by black hole behemoth

    Black hole bonanza

    The Event Horizon Telescope captured the first image of a black hole (shown on the cover of Science News at left). Data from the telescope array revealed that the behemoth, which resides at the center of the galaxy M87, is about 38 billion kilometers across and about 6.5 billion solar masses, Lisa Grossman and Emily Conover reported in “The first picture of a black hole...

    06/17/2019 - 07:15 Astronomy, Physics, Animals
  • News in Brief

    Table salt may be hiding in Europa’s underground sea

    What flavors our food may also season the sea of Jupiter’s moon Europa.

    Sulfate salts were thought to lurk in the watery ocean under the moon’s icy crust. But data from the Hubble Space Telescope suggest that common table salt dominates the sea’s chemistry, researchers report June 12 in Science Advances.

    “This could mean that the ocean chemistry is more similar to what we’re used...

    06/14/2019 - 11:02 Astronomy, Planetary Science
  • News

    Massive superflares have been seen erupting from stars like the sun

    ST. LOUIS — It isn’t only young stars that spit high-energy superflares. Older stars, such as the sun, can also send out bursts of energy that could be powerful enough to strip away planetary atmospheres in close orbit, researchers report.

    Such superflares can be seen from hundreds of light-years away. Astrophysicists had assumed that only young stars had these outbursts. But a team of...

    06/14/2019 - 07:00 Astronomy
  • News in Brief

    Astronomers may have spotted the ghost galaxy that hit the Milky Way long ago

    The Milky Way survived a galactic hit and run millions of years ago — and astronomers may have finally found the culprit. 

    Ten years ago, astrophysicists Sukanya Chakrabarti and Leo Blitz of the University of California, Berkeley, suggested that ripples in the outer gas disk of the Milky Way were caused by a collision with a dwarf galaxy that shook the Milky Way’s gas like a pebble...

    06/12/2019 - 12:00 Astronomy
  • 50 years ago, scientists wanted to build solar panels on the moon

    Solar power from moon to Earth —

    An almost unlimited supply of electricity could be generated on the moon’s surface by huge arrays of solar cells and beamed to Earth by laser. Sunlight falling on a crater … could produce from 10,000 to 100,000 megawatts of power. By comparison, a large hydroelectric dam on Earth produces about 100 megawatts. Solar cells would be more efficient on...

    06/07/2019 - 08:00 Astronomy, Technology, History of Science
  • News

    In a first, magnetic fields have been spotted between two galaxy clusters

    For the first time, astronomers have sighted magnetic fields between two galaxy clusters — a find that suggests some of the largest scale structures in the universe are magnetized.

    The fields run between the galaxy clusters Abell 0399 and Abell 0401, which are beginning to merge about 1 billion light-years from Earth, researchers report in the June 7 Science. Radiation from electrons...

    06/06/2019 - 14:00 Astronomy, Cosmology
  • News

    The accretion disk around our galaxy’s black hole has been spotted at last

    Some supermassive black holes announce their presence with screaming hot disks of orbiting gases. But the behemoth at the center of the Milky Way has been shy and demure. Now, astronomers have finally spotted the black hole’s faintly glowing accretion disk of infalling material, long suspected but never before seen.

    “I was very surprised that we actually saw it,” says astrophysicist...

    06/05/2019 - 13:02 Astronomy
  • Science Visualized

    Watch the oldest surviving film of a total solar eclipse

    This is the oldest surviving video of a total solar eclipse.

    The grainy marvel was taken nearly 120 years ago on May 28, 1900, by a British magician-turned-filmmaker named Nevil Maskelyne, according to a report on May 30 from the Royal Astronomical Society and the British Film Institute in London.  The original film fragment, captured on a British Astronomical Association expedition to...

    05/30/2019 - 17:03 Astronomy, Science & Society
  • Letters to the Editor

    Questions about solar storms, slingshot spiders and more reader feedback

    Blast from the past

    Ice core and tree ring data indicate that nearly 3,000 years ago, Earth was blasted with one of the strongest solar storms ever to pummel the planet, Carolyn Gramling reported in “One of the strongest known solar storms blasted Earth in 660 B.C.” (SN: 4/13/19, p. 15).

    Reddit user diffcalculus wondered what kind of damage such a storm would cause today.

    Earth...

    05/29/2019 - 16:05 Astronomy, Robotics, Animals