NASA

Boeing's Starliner spacecraft will return to Earth today after undocking from the International Space Station without its crew. A livestream of the mission begins at 5:45 p.m. ET.

A NASA spacecraft erected a large, foil solar sail in orbit around Earth last week, after a failed attempt days earlier. However, subsequent observations of the spacecraft show it is "tumbling or wobbling" through space, which may have also impacted its trajectory around our planet.

A new study suggests that millions of tiny space rock fragments, which were ejected from the 2022 collision between asteroid Dimorphos and NASA's DART spacecraft, may be on a collision course with Earth and Mars.

NASA astronauts Butch Wilmore and Sunita Williams will spend at least eight consecutive months aboard the International Space Station as their Boeing Starliner spacecraft returns to Earth empty. Is their extended spaceflight record-setting?

NASA astronauts Butch Wilmore and Sunita Williams will not return to Earth on the troubled Boeing Starliner spacecraft. Instead, NASA will bring them home in February 2025 aboard a SpaceX vehicle, while Starliner falls to Earth uncrewed.

Voyager 2, NASA's longest-running mission, explored Neptune during a historic encounter on Aug. 25, 1989, sending back humanity's first close-ups of the planet.

The moon was once engulfed by a massive magma ocean, analysis of geological samples collected by India's Chandrayaan-3 mission suggests.

The moon's glow meets a stunning aurora in a new astronaut image taken from space.

NASA has once again pushed back the deadline for when the troubled Boeing Starliner spacecraft must leave the International Space Station. The agency expects to be ready to conduct a flight readiness review as soon as the end of next week.

NASA's Chandra X-ray space telescope has created a 3-D map of nearby stars that may help astronomers search for alien planets with the potential for life.