Editor’s Note: Douglas Brinkley is the Katherine Tsanoff Brown Chair in Humanities and Professor of History at Rice University. He is the author of “American Moonshot: John F. Kennedy and the Great ...

A wreath is presented by, from left, Bob Cabana, Associate Administrator of NASA; Janet Petro, NASA KSC director, and Sheryl Chaffee, daughter of Apollo 1 astronaut Roger Chaffee, during NASA's Day of ...

(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 ...

WASHINGTON — Human space flight is an inherently risky and dangerous business, but NASA’s reliance on informal communications to manage space shuttle operations — coupled with the agency’s insular ...

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 ...

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 ...

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.