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, and ...

(CNN) — Perhaps more than any other moment in NASA’s history, the Columbia shuttle disaster reshaped the US space agency’s approach to innovation, forever altering how it balanced risk with the call ...

On February 1, 2003, the space shuttle Columbia fell apart as it returned to Earth after spending more than two weeks in space. The accident instantly killed all seven astronauts on board. This was ...

EDITOR’S NOTE: Miles O’Brien is the science correspondent for PBS NewsHour and an aviation analyst for CNN. He was previously a staff correspondent and anchor with CNN, based in Atlanta and New York.

CAPE CANAVERAL ” Discovery and seven astronauts blasted into orbit Tuesday on America’s first manned space shot since the 2003 Columbia disaster, ending a painful, 2 1/2-year shutdown devoted to ...

The CNN Original Series “Space Shuttle Columbia: The Final Flight” uncovers the events that ultimately led to disaster. The four-part documentary concludes at 9 p.m. ET/PT Sunday. Perhaps more than ...