Nov. 1, 2001
Light pollution is a growing environmental problem that threatens to erase the night sky before its time.
Jan. 30, 2001
Last month a group of Chicago students talked to Astronautson the International Space Stationvia amateur radio.
Sept. 27, 2001
Flying into the largest storms on Earth is all in a day's work for pilots on a NASA mission to explore hurricanes.
Aug. 22, 2001
NASA's Galileo spacecraft has spotted curious icy spires jutting from the surface of Jupiter's moon Callisto. The bizarre-looking natural features have researchers wondering if the surface of the frigid moon might be a more dynamic place than they once thought.