A mid-level flare, an M6.5, erupted from the sun on April 2, 2014, peaking at 10:05 a.m. EDT.
A new study of gamma-ray light from the center of our galaxy makes the strongest case to date that some of this emission may arise from dark matter
NASA has suspended contact with Russian government representatives, citing ongoing violations of Ukraine's sovereignty and territorial integrity
New Delhi: Sky enthusiasts, get ready to witness another much-anticipated astronomical event coming up this month.
Legislators on Thursday grilled NASA's top official about the possible impact of the Crimea crisis and criticized proposed missions to capture a near-Earth asteroid
A little-known U.S. space plane quietly broke its own space endurance record this week as its current unmanned mission surpassed 469 days in space.
The Rosetta spacecraft has caught a first glimpse of its destination comet since waking up from deep-space hibernation on Jan. 20.
NASA released Thursday an image of a comet that, on Oct. 19, will pass within 84,000 miles of Mars -- less than half the distance between Earth and our moon.
How do you grow a supermassive black hole that is a million to a billion times the mass of our sun?
The declassification of historical intelligence satellite imagery has been a boon to scientists, environmentalists and other researchers since it began
NASA's Z-2 Suit is the newest prototype in its next-generation spacesuit platform, the Z-series.
This new Hubble image is centered on NGC 5793, a spiral galaxy over 150 million light-years away in the constellation of Libra.
A spacecraft that looks like a giant sunflower might one day be used to acquire images of Earth-like rocky planets around nearby stars.
In celebration of the 24th anniversary of the launch of NASA's Hubble Space Telescope, astronomers have captured infrared-light images of a churning region of star birth 6,400 light-years away.
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