Americans and millions of others around the world are mourning the deaths of seven brave astronauts under circumstances few people can even imagine. Though the specific causes of the Columbia tragedy ...

(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, tragedy struck the space shuttle Columbia, as earlier damage to the craft's left wing caused the shuttle to be destroyed upon reentry, killing all seven astronauts on board. It ...

Promo art for CNN's "Space Shuttle Columbia: The Final Flight". Since the tragic explosion of the space shuttle Challenger 73 seconds after liftoff on Jan. 28, 1986, resulting in the loss of all seven ...

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 ...

More than 3,000 people remain without power following Wednesday's powerful tornado, which resulted in extensive damage in Columbia, including one confirmed fatality. The National Weather Service, as ...

Feb. 1, 2003 -- ABCNEWS' space consultant Jim Slade cautions that it remains early to speculate what caused Columbia to break up during re-entry. Finding the cause will likely be a long process and ...

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 ...