NASA'S MESSENGER PROBE FLEW by the planet Mercury for the second time this year early Monday morning. It maneuvered as close as 125 miles above the planet and took hundreds of pictures, according to NASA's Web site. The probe also collected various other data during this pass. Messenger is the first mission sent to orbit Mercury, and should do so in March 2011, NASA said. ...more

October 8, 2008

NASA's Messenger probe flew by the planet Mercury for the second time this year early Monday morning. ...more

October 7, 2008

"Ms. Hempel Chronicles," by Sarah Shun-Lien Bynum (Harcourt, $23) ...more

October 5, 2008

When Arturo Rodriguez was 8, he told his grandmother he wanted to be an astronaut. ...more

October 5, 2008

NASA said Monday it is delaying its mission to the Hubble Space Telescope until next year because of a serious breakdown of the observatory in orbit. ...more

September 30, 2008

In an unprecedented step, a second space shuttle was moved to the launchpad Friday for a trip NASA hopes it will never make: a rescue mission. ...more

September 20, 2008

NASA has delayed the launch of an unmanned spacecraft to the moon to scout for potential landing sites for astronauts. ...more

August 15, 2008

NASA's ability to send its astronauts to the $100 billion International Space Station is in danger of becoming a costly casualty of the Russia-Georgia war. ...more

August 15, 2008

CAPE CANAVERAL — NASA astronaut Greg Chamitoff is standing by to take your questions. ...more

August 14, 2008

What would the Olympics be without the flair of a little controversy? Biased judges, doping, athletes attacking their foes, all of these (and others) have been witnessed at some time or another, and the 2008 Beijing Games are no different. ...more

August 10, 2008