Dec. 5, 2001
New maps from orbiting sensors that can detect flashes of Lightningeven during the daytime reveal where on Earth the powerful bolts will most likely strike.
April 3, 2001
A discovery by astronomers using the Hubble Space Telescope supports the notion that the Universe is filled with a mysterious form of energy pushing galaxies apart at an ever-increasing rate.
Sept. 7, 2001
Watching liquids boil in low gravity is an out-of-this-world experience. The strangely turbulent liquids have plenty of entertainment value, and they're teaching scientists some important Physicslessons, too.
Oct. 15, 2001
Today, NASA's Galileo spacecraft is heading for its closest-ever flyby of Jupiter's moon Io -- an alien world where fiery volcanoes belch sulfurous snow.
Feb. 9, 2001
Artificial greenhouse gases that are bad news on Earth could provide the means to make Mars a more comfortable place for humans to live.
Nov. 21, 2001
Researchers have found that gravity -- either too much or too little of it -- affects the behavior of sperm in puzzling ways.
Oct. 9, 2001
Students and scientists are teaming up for a far-out experiment to monitor the outer reaches of Earth's atmosphere.
Oct. 1, 2001
Weightlessness sure looks like a lot of fun, but prolonged exposure of Astronautsto zero-G can have some negative side effects -- like the weakening of human bones!
Oct. 26, 2001
Lately, sky watchers have been enjoying plenty of Northern Lights. Indeed, say researchers, autumn is a good time to spot auroras. But why? Read this story and find out.
March 6, 2001
La Nina-like conditions that have persisted in the Pacific Ocean for three years might finally subside this Fall.