NASA's Artemis II crewed mission to the moon shows how U.S. space strategy has changed since Apollo -- and contrasts with China's closed program.

NASA's Suni Williams, who spent over 280 days stranded in space during Boeing Starliner's failed test flight, announced her retirement from the agency.

Dramatic video footage showed flames billowing from the bottom of a NASA research plane as it made an emergency belly landing at a Texas airport Tuesday. The NASA WB-57 aircraft was forced to slide gears-up — or without its landing equipment deployed — onto the runway at Ellington Airfield in Houston after it experienced a mechanical issue at around 11:30 a.

NASA's space shuttle Challenger completed 10 missions before it broke apart during a launch in 1986, killing seven astronauts.

NASA is considering an early return of its crew aboard the International Space Station (ISS) due to an unspecific medical issue. The rare move comes after the agency canceled a spacewalk initially scheduled for Thursday, according to Reuters. "Safely ...

What everyone agrees on is that NASA needs a new spacecraft capable of relaying communications from Mars to Earth. This issue has become especially acute with the recent loss of NASA’s MAVEN spacecraft. NASA’s best communications relay remains the Mars Reconnaissance Orbiter, which has now been there for 20 years.

Ahead of the launch of Artemis II, the first crewed mission to the moon in more than 50 years, astronauts share the movies that capture the danger, teamwork, and wonder of spaceflight. Their picks offer cinematic glimpses into the real challenges and triumphs of exploring beyond Earth.