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

Today is the tenth anniversary of the explosion of the space shuttle Columbia, which blew apart as it was gliding across Texas to a Florida landing. All seven crew members died, and Texans were poking ...

Introduction : organizational aspects of the Columbia disaster ; Synopsis : NASA, the CAIB report, and the Columbia disaster / Moshe Farjoun and William H. Starbuck -- History and policy at the space ...

On04, NASA's Spirit rover landed on Mars! Also known as Mars Exploration Rover 2, this was the first of NASA's twin rovers to land on the Red Planet. The other was named Opportunity. These rovers were ...