July 20, 2004
A cutting-edge Apollo 11 science experiment left behind in the Sea of Tranquility is still running today.
May 13, 2004
Microbiologists have found a community of extreme-loving microbes working together to survive at the bottom of California's Mono Lake.
June 21, 2004
Twenty years after the first wave of hype, VR is making a comeback in NASA laboratories.
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.
March 2, 2004
Long ago, parts of Mars were soaked in liquid water, say scientists analyzing data from NASA's Mars rover Opportunity.
Sept. 14, 2004
Jupiter's moon Io is shooting tiny volcanic projectiles at passing spacecraft.
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.