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E.g., 04/30/2017
E.g., 04/30/2017
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Your search has returned 1255 articles:
  • Reviews & Previews

    Read up on solar eclipses before this year’s big event

    In August, the United States will experience its first coast-to-coast total solar eclipse in nearly a century. Over the course of an hour and a half, the moon’s narrow shadow will slice across 12 states, from Oregon to South Carolina (SN: 8/20/16, p. 14). As many as 200 million people are expected to travel to spots where they can view the spectacle, in what could become one of the most...

    04/30/2017 - 08:00 Astronomy, History of Science
  • News

    No long, twisted tail trails the solar system

    The solar system doesn’t have a long, twisted tail after all.

    Data from the Cassini and Voyager spacecraft show that the bubble of particles surrounding the solar system is spherical, not comet-shaped. Observing a spherical bubble runs counter to 55 years of speculation on the shape of this solar system feature, says Tom Krimigis of the Johns Hopkins Applied Physics Laboratory in Laurel...

    04/24/2017 - 11:00 Astronomy
  • News in Brief

    Gamma-ray evidence for dark matter weakens

    A potential sign of dark matter is looking less convincing in the wake of a new analysis.

    High-energy blips of radiation known as gamma rays seem to be streaming from the center of the Milky Way in excess. Some scientists have proposed that dark matter could be the cause of that overabundance. Particles of dark matter — an invisible and unidentified substance that makes up the bulk of...

    04/24/2017 - 09:00 Physics, Astronomy
  • News

    Jupiter’s Great Red Spot has company. Meet the Great Cold Spot

    Jupiter’s got a second giant spot.

    Called the Great Cold Spot, this dark mark is twice as big as Earth, but cooler and more fickle than the planet’s famous (and similarly sized) Great Red Spot. The cool spot sits in Jupiter’s northern regions, not far from the stunning northern aurora in the planet’s atmosphere. The aurora may play a role in creating the newly detected dark mark,...

    04/12/2017 - 12:00 Planetary Science, Astronomy
  • News in Brief

    Squabbles in star nurseries result in celestial fireworks

    A stellar game of chicken between two young stars about 500 years ago has produced some fantastic celestial fireworks, new images released on April 7 by the European Southern Observatory reveal.

    Whether or not the stellar duo collided is unclear. But their close encounter sent hundreds of streamers of gas, dust and other young stars shooting into space like an exploding firecracker....

    04/07/2017 - 09:00 Astronomy
  • News

    Massive red, dead galaxy spotted in young universe

    A hefty red, dead galaxy in the early universe appears to have bulked up a bit too fast.

    The galaxy, seen as it was when the universe was only 1.65 billion years old, weighs at least three times as much as the Milky Way, but has stopped making stars. Other galaxies at the time tend to be much smaller and continue to churn out stars. How such a monster was made in less than a billion...

    04/05/2017 - 13:00 Astronomy
  • Science Ticker

    Event Horizon Telescope to try to capture images of elusive black hole edge

    The Milky Way’s black hole may finally get its close-up.

    Beginning on April 5, scientists with the Event Horizon Telescope will attempt to zoom in on a never-before-imaged realm: a black hole’s event horizon. That’s the boundary at which gravity’s pull becomes so strong that nothing can escape.

    In the telescope’s cross hairs are two supermassive black holes, one at the center of...

    04/05/2017 - 05:00 Astronomy, Physics
  • Science Ticker

    SpaceX launches and lands its first reused rocket

    In a spaceflight first, the aerospace company SpaceX has successfully launched and landed a previously used rocket.

    The Falcon 9 rocket blasted off March 30 from NASA’s Kennedy Space Flight Center in Florida at 6:27 p.m. EDT carrying a commercial telecommunications satellite. After separating from the rest of the rocket and its payload, the refurbished first stage of the rocket touched...

    03/30/2017 - 18:42 Technology, Astronomy
  • How Bizarre

    Asteroid in Jupiter's orbit goes its own way

    View the video

    One of Jupiter’s companions is a bit of a nonconformist.

    The gas giant shares its orbit around the sun with a slew of asteroids, but scientists have now discovered one that goes against the flow. It journeys around the solar system in reverse — in the opposite direction of Jupiter and all the other planets. Asteroid 2015 BZ509 is the first object found that orbits in...

    03/29/2017 - 13:00 Astronomy
  • News

    Supermassive black hole gets kicked to the galactic curb

    A black hole weighing more than a billion suns appears to have gotten the boot toward the outer edges of its galaxy.

    Data from the Hubble Space Telescope and other observatories reveal a supermassive black hole zipping away from the center of its galaxy at a 7.5-million-kilometer-per-hour clip. It’s moving so quickly that it could leave the galaxy for good in 20 million years, says Marco...

    03/28/2017 - 15:08 Astronomy