Dec. 20, 2000
The case for ancient life on Mars looks better than ever after scientists announced last week that they had discovered magnetic crystals inside a Martian meteorite -- crystals that, here on Earth, are produced only by microscopic life forms.
Nov. 7, 2000
Later this century a relic from NASA's earliest space exploration efforts might return to Earth, if current estimates are confirmed. The near-Earth object, which follows an orbit almost identical to our planet's, looks like an asteroid but may be an Apollo-era rocket booster.
Feb. 24, 2000
An innovative satellite called IMAGE, slated for launch on March 15, 2000, will revolutionize our understanding of Earth's magnetosphere and improve Space Weatherforecasting.
Oct. 2, 2000
Concentrations of ozone-destroying gases are down, but the Antarctic ozone hole is bigger than ever. It turns out there's more to ozone destruction than just CFCs. Stratospheric ice crystals, the Antarctic Vortex, and global warming play a role, too.
June 22, 2000
In what could turn out to be a landmark discovery in the history of Mars exploration, scientists using data from NASA's Mars Global Surveyor spacecraft have observed features that suggest current sources of liquid water at or near the surface of the red planet. NASA scientists compare the features to those left by flash floods on Earth.
July 28, 2000
Although comet LINEAR was not bright enough to see with the unaided eye when it passed by Earth this week, the comet is grabbing the attention of astronomers with peculiar behavior, including orbit-altering jets and fragments breaking away from its nucleus.
June 20, 2000
Scientists have found a molecular cousin to table sugar in an interstellar molecular cloud. The discovery of this molecule in a cloud where new stars are forming means it is increasingly likely that chemical precursors to life are present in such clouds long before planets develop around the stars.
May 26, 2000
The pioneering Space Stationconcepts of the mid-1950's don't look much like the erector-set habitat in orbit today. Read about rocket scientist Werner von Braun's early designs for an outpost in space and how he advocated his ideas to the public 50 years ago.
Aug. 4, 2000
NASA satellites are keeping a close eye on wildfires raging across the Western US. Every few hours, a global map of smoky aerosols is updated at the Total Ozone Mapping Spectrometer web site. Now, anyone with a connection to the Internet can share the same "bird's eye" view enjoyed by NASA scientists.
Feb. 6, 2000
One of the biggest and brightest optical flares of the current sunspot cycle erupted this weekend. The flare was a whopper, but the sunspot group it came from wasn't.