Sept. 26, 2007
Two years ago, NASA's Deep Impact spacecraft blasted a hole in Comet Tempel 1, offering researchers their first look inside a comet. One small problem: The cloud of debris was so thick no one could clearly see the crater. But now the dust has cleared and another NASA spacecraft is returning to the scene to examine the hole Deep Impact wrought.
March 14, 2007
NASA scientists are shooting marbles at 16,000 mph to learn what happens when meteoroids hit the Moon.
Aug. 16, 2007
When she blasted off onboard the Space Shuttlelast week, teacher-turned-astronaut Barbara Morgan carried millions of basil seeds to the ISS. Soon she'll return millions more "space seeds" for students on Earth to study.
Jan. 26, 2007
In this story, planetary geologist Paul Spudis discusses some of the mysteries of Earth that might be solved by returning to the Moon.
Dec. 6, 2007
Astronomers using Japan's Hinode spacecraft have discovered a major new form of solar activity: abundant x-ray jets.
April 12, 2007
NASA's Chandra X-ray Observatoryhas observed a remarkable eclipse of a supermassive black hole, allowing a disk of hot matter swirling around the hole to be measured for the first time.
March 12, 2007
NASA's STEREO-B spacecraft was about a million miles from Earth last month when it photographed The Moonpassing in front of the sun. The resulting movie looks like it came from an alien solar system.
Dec. 18, 2007
A powerful jet from a supermassive black hole is blasting a nearby galaxy and possibly causing profound problems for planets in the jet's path.
June 28, 2007
NASA's Mars rover Opportunity is scheduled to begin a descent down a rock-paved slope into the Red Planet's massive Victoria Crater. This carries real risk for the long-lived robotic explorer, but NASA and the Mars Rover science team expect it to provide valuable science.
April 27, 2007
Lightningis more than just heat and light: it's a chemical factory that produces a natural pollutant called "NOx" that can affect both local air quality and global climate. NASA scientists are developing new ways to monitor LightningNOx from Earth orbit.