Space Exploration

Boeing's Starliner capsule has been cleared for its first-ever crewed launch, a test flight scheduled to send two astronauts toward the International Space Station on May 6.

Oleg Kononenko and Nikolai Chub are back inside the International Space Station after just 4.5 hours outside.

Veteran NASA astronauts Butch Wilmore and Suni Williams expect to face the unexpected in space with Boeing Starliner, but told reporters on April 25 that the team is ready for the unexpected.

After 64 years, the United Launch Alliance launched the final flight of its Delta IV Heavy rocket on April 9th, and stunning rocket cam footage captured the fiery finale.

Find out what's going on at the International Space Station.

A Long March 2F rocket lifted off from China's Jiuquan Satellite Launch Center today (April 25), carrying the Shenzhou 18 spacecraft and its three-person crew into orbit.

Two Russian cosmonauts are scheduled to spend about seven hours working outside the International Space Station today (April 25), and you can watch the action live.

China plans to launch the three-astronaut Shenzhou 18 mission to its Tiangong space station today (April 25), and you can watch the action live.

Take a fresh look at the iconic Dumbbell Nebula on occasion of the Hubble Space Telescope's 34 years in space.

Two spacewalks this winter fixed the power supply of China's Tiangong space station, which was damaged by a space debris strike, state media reported.