It's been 10 years since the Columbia space shuttle accident, and spaceflight safety has come a long way — but has it come far enough? Experts say traveling to space is still a risky business ...

More than 100 people gathered under a gray sky at Kennedy Space Center to remember not only Columbia’s crew of seven, but the 18 other astronauts killed in the line of duty. NASA’s two shuttle ...

SHREVEPORT, La - The Space Shuttle Columbia broke apart over East Texas as it returned to earth on Feb. 1, 2003.

The Apollo 1 fire that killed three was on Jan. 27, 1967, while the Columbia disaster that killed seven happened on Feb. 1, 2003.

Space shuttle Discovery and its seven-member crew launch on July 26, 2005, the first shuttle mission after the Columbia disaster.

Kalpana Chawla, born on March 17, 1962, was the first Indian woman to travel to space twice. Tragically, she lost her life in the Columbia Space Shuttle disaster in February 2003.

NASA marked the 20th anniversary of the space shuttle Columbia tragedy Thursday with somber ceremonies and remembrances during its annual tribute to fallen astronauts.

Nearly two-and-a-half years after the space shuttle Columbia exploded over Texas while reentering Earth, a second fatal accident that killed all seven crew members, Discovery(STS-114) launched on ...