Artist's depiction of the four Cluster spacecraft in Earth's magnetic field.
Expedition 33/34 crew members, Soyuz Commander Oleg Novitskiy, bottom, Flight Engineer Kevin Ford of NASA, and Flight Engineer Evgeny Tarelkin…
These are the first, focused high-energy X-ray views of the area surrounding the supermassive black hole, called Sagittarius A*, at…
NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR, has captured these first, focused views of the supermassive black hole at the…
The Soyuz rocket is rolled out to the launch pad by train, on Sunday, Oct. 21, 2012, at the Baikonur…
The sun emitted a significant solar flare, peaking at 2:14 p.m. EDT on Oct. 20, 2012 NASA's Solar Dynamics Observatory…
The robotic arm on NASA's Mars rover Curiosity delivered a sample of Martian soil to the rover's observation tray for…
An aerial photograph of NASA's Ames Research Center taken in February 2012.
The MODIS instrument on NASA's Aqua satellite captured this visible image of Sea Ice off eastern Greenland on October 16,…
A solar prominence rose up and swept away from the sun as captured in this image at 4:15 a.m. EDT…
