May God bless the crew of Columbia." Past and present NASA officials, including the space agency's boss, Michael Griffin, stressed how spaceflight is risky and always will be.

When NASA’s Columbia shuttle launched on January 16, 2003, it carried a crew of seven astronauts who had spent nearly three years getting to know one another before venturing on a 16-day science ...

CAPE CANAVERAL, Fla. - Schoolchildren joined NASA managers and relatives of the lost crew of space shuttle Columbia on Friday to mark the 10th anniversary of the tragedy and remember the seven ...

The exodus at NASA has shaken the officials at the space agency and stoked concerns about its ability to fly astronauts ...

The wife of Columbia Commander Rick D. Husband, Evelyn Husband (left), and then NASA Associate Administrator Bill Readdy place a wreath October 28, 2003, at the Astronaut Memorial in Kennedy Space ...

At least one crew member was alive and pushing buttons for half a minute after a first loud alarm sounded, as he futilely tried to right Columbia during that disastrous day Feb. 1, 2003.

CAPE CANAVERAL, Fla. (AP) — NASA marked the 20th anniversary of the space shuttle Columbia tragedy with somber ceremonies and remembrances during its annual tribute to fallen astronauts on Thursday.

In this image made from video provided by NASA, NASA Deputy Director Flight Missions Kjell Lindgren, center, speaks in front of the crew members of the first CHAPEA mission, from left to right ...