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  • Blasting a Hole in a Comet: Take 2

    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.

  • Shooting Marbles at 16,000 mph

    March 14, 2007

    NASA scientists are shooting marbles at 16,000 mph to learn what happens when meteoroids hit the Moon.

  • Basil Orbits Earth

    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.

  • The Moonis a Harsh Witness

    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.

  • New Discovery: The Sun is Bristling with X-ray Jets

    Dec. 6, 2007

    Astronomers using Japan's Hinode spacecraft have discovered a major new form of solar activity: abundant x-ray jets.

  • Black Hole Eclipse

    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.

  • STEREO Eclipse

    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.

  • NASA Announces Discovery of Assault by a Black Hole

    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.

  • Risky Descent

    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.

  • Noxious Lightning

    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.