Fourth-grade students in the College Station Independent School District (CSISD) in Texas have completed six weeks of a NASA health and fitness challenge known as "Mission X: Train Like an Astronaut".

The space shuttle Endeavour glided to a nighttime landing in Florida Wednesday, concluding a mission that equipped the international space station with the first segment of a Japanese science lab.

The crews of the International Space Station and the visiting space shuttle Endeavour spoke from space Sunday night to reporters gathered at NASA's Johnson Space Center in Houston, Texas. During the event, collectSPACE.com asked the astronauts to reflect on the influences of science fiction writer Arthur C.

By Marcia Dunn Associated Press CAPE CANAVERAL, Fla. -- Two spacewalking astronauts pulled out a caulk gun and a high-tech kind of Silly Putty on Thursday night and tested a method for patching shuttle thermal tiles.

U.S. astronauts Rick Linnehan and Robert Behnken completed the third spacewalk of the STS-123 mission at 1:44 a.m. EDT Tuesday.