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.
Astronomers are announcing today that they have acquired the first direct evidence that gravitational waves rippled through our infant universe during an explosive period of growth called inflation.
Last June, the Chairman of the Joint Chiefs of Staff issued a classified "execute order" to authorize and initiate a military operation.
NASA's built and is sending a set of high-tech legs up to the International Space Station for Robonaut 2 (R2), the station's robotic crewmember.
NASA's Wide-Field Infrared Survey Explorer (WISE) has turned up no evidence of the hypothesized celestial body in our solar system commonly dubbed "Planet X."
A collage of radar images of near-Earth asteroid 2006 DP14 was generated by NASA scientists using the 230-foot (70-meter) Deep Space Network antenna
Roguish runaway stars can have a big impact on their surroundings as they plunge through the Milky Way galaxy.
15-28 of 237