Add Yahoo as a preferred source to see more of our stories on Google. NASA's Space Launch System rocket and Orion spacecraft, pictured here on February 1, are currently on Launch Pad 39B at Kennedy ...

If all had gone according to plan, four astronauts might have been returning just this week from a history-making, 10-day slingshot trip around the moon. Instead, NASA’s engineers have been grappling ...

NASA’s Neil Gehrels Swift Observatory, a 21-year-old space telescope that has tracked gamma-ray bursts and cosmic explosions since 2004, is losing altitude fast enough that the agency has suspended ...

NASA is facing a race against time to save its 21-year-old spacecraft, the Neil Gehrels Swift Observatory, which has been on a critical mission to study some of the most powerful explosions in the ...

Artemis II will be the first human spaceflight to the vicinity of the Moon since 1972 and is the first crew mission for ...

Fixing the Space Launch System rocket's helium pressurization problem has pushed the Artemis II launch to at least April 1.

"Work on the rocket and spacecraft will continue in the coming weeks as NASA prepares for rolling the rocket out to the launch pad again later this month ahead of a potential launch in April." ...

NASA's second multi-day test to simulate a launch day is underway in Florida in a critical demonstration of whether the agency's massive moon rocket is prepared to send astronauts on a lunar mission.

NASA is fueling up its giant lunar rocket and attempting to complete a launch-day walkthrough on Thursday ahead of its highly anticipated mission to send four astronauts around the moon. The hourslong ...

NASA fueled up its giant lunar rocket and completed a launch-day walkthrough on Thursday ahead of its highly anticipated mission to send four astronauts around the moon. The hourslong test, known as a ...