NASA's Orion Launch Will Test Future of Manned Spaceflight

Live coverage of the countdown and flight of a Delta 4-Heavy rocket carrying NASA's Orion space capsule on its first test flight in Earth orbit. Text updates will appear automatically below; there is no need to reload the page.

A string of weather issues and technical problems prompted NASA to delay Thursday's planned launch of an unmanned Orion spacecraft from Florida for at least a day. Orion's launch would have marked the first test flight of a spacecraft the U.S. hopes to

Thousands of space enthusiasts and spectators are flocking to Florida's “Space Coast” this week to witness the world's most powerful rocket launch NASA's deep space Orion crew capsule on Thursday, Dec. 4 (7:05 a.m. EST 

Thursday's first test flight of the US space agency's Orion "Mars ship" has been postponed because of weather and technical issues. The capsule had been due to launch atop a Delta rocket on a short journey above the Earth to prove key technologies.

The space agency's new Orion spacecraft is scheduled to lift off on an uncrewed test flight from Space Launch Complex 37 at Cape Canaveral, Florida. But some delays have so far kept it on the launch pad. The launch, initially set for 7:05 a.m. ET, was