Four astronauts are on their way to the International Space Station after being sidelined by Boeing's Starliner trouble and ...

The shuttle's planned 16-day mission to the International Space Station has been delayed a month, with launches postponed five times. Leaks of hydrogen gas during fueling scrubbed launch attempts ...

The capsule's dizzying drop back down to Earth will be slowed when it re-enters Earth -- and then again by huge parachutes to ...

The X-37B, a reusable space plane about a quarter the size of the Space Shuttle, has spent over 4,200 days in orbit since its first launch in 2010. The mysterious Space Force space plane is headed ...

"The shuttle payload to ISS is less than to LEO, 16,050 kg, so its cost is also higher at $93,400/kg," adds the space agency. Overall, NASA estimates that the net cost of space station launch ...