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  • What Neil & Buzz Left on the Moon

    July 20, 2004

    A cutting-edge Apollo 11 science experiment left behind in the Sea of Tranquility is still running today.

  • Extreme Ecosystem

    May 13, 2004

    Microbiologists have found a community of extreme-loving microbes working together to survive at the bottom of California's Mono Lake.

  • Whatever happened to ... Virtual Reality?

    June 21, 2004

    Twenty years after the first wave of hype, VR is making a comeback in NASA laboratories.

  • Tumbleweeds in the Bloodstream

    Oct. 28, 2004

    Tiny sensors, shaped like tumbleweed and small enough to fit inside a blood vessel, might one day ride to space inside astronauts' bodies, warning the space travelers when radiation is damaging their cells.

  • Meridiani Planum: "Drenched"

    March 2, 2004

    Long ago, parts of Mars were soaked in liquid water, say scientists analyzing data from NASA's Mars rover Opportunity.

  • Beware: Io Dust

    Sept. 14, 2004

    Jupiter's moon Io is shooting tiny volcanic projectiles at passing spacecraft.

  • Interplanetary Hole in One

    Jan. 26, 2004

    After traveling 300 million miles, Spirit's twin rover Opportunity landed on Mars in a small shallow crater--the perfect place to look for signs of ancient martian water.