March 27, 2001
Fast-moving solar eruptions that overtake and devour their slower-moving kin can trigger long-lasting geomagnetic storms when they strike Earth's magnetosphere.
March 28, 2001
On rusty-red Mars, a curious deposit of gray-colored hematite (a mineral cousin of common household rust) could hold the key to the mystery of elusive Martian water.
Dec. 3, 2001
This weekend a flurry of sensational fireballs startled onlookers in western Europe and parts of the United States. What were the vivid lights? Read this story and find out.
Nov. 2, 2001
A new and unorthodox treatment under study by NASA-funded doctors could reverse bone loss experienced by Astronautsin space.
Oct. 17, 2001
The annual Orionid meteor shower peaks this weekend on October 21st. Sky watchers will see as many as 20 fast shooting stars each hour -- each one a tiny piece of Halley's Comet.
Dec. 7, 2001
What are the Geminid meteors? Scientists aren't sure. Perhaps chips off an exotic asteroid or dust from an extinct comet. In either case, they'll soon be here.
Sept. 25, 2001
Against all odds, NASA's Deep Space 1not only survived its daring encounter with Comet Borrelly but also returned stunning pictures of the comet's hidden nucleus.
Jan. 25, 2001
The first global views of our planet's magnetosphere, captured by NASA's IMAGE spacecraft, reveal a curious plasma tail that stretches toward the Sun.
March 14, 2001
On the ground, the International Space Stationwould be an odd looking building -- but space is an odd place to live! Find out how space weather, orbital free fall, and the Space Shuttle's payload bay shapes the architecture of the ISS.
Dec. 14, 2001
A big and bright near-Earth asteroid will glide by our planet on Dec. 16th within easy range of powerful radars and backyard telescopes.