With Discovery's return to flight complete, NASA is counting up the accomplishments for this shuttle mission: 14 days in space,…
Since we're inside the Milky Way, it's impossible for us to see what our whole galaxy looks like. But we…
After a one-day delay, NASA's Mars Reconnaissance Orbiter is ready for launch on Thursday, August 11. The first launch window…
Saturn's small moon Epimetheus is seen here just beneath the planet's ring plane. The bright, knotted core of Saturn's F…
Our planet gained its nice, oxygen-rich atmosphere about 2.4 billion years ago thanks to early bacteria. One question that has…
The Earth suffered a period of heavy bombardment in its early days when the Solar System was swarming with asteroids.…
José Luis Ortiz had no idea that his announcement on July 29th of the discovery of a big Trans-Neptunian Object…
One person can harvest a field, many people can move a mountain. This is the power of community. The challenge…
The space shuttle Discovery returned safely back to Earth this morning, landing at Edwards Air Force Base at 1211 UTC…
Brad Timerson took this picture of the Moon and Venus on August 7, 2005. Brad used Olympus C740 camera at…