As the four-person crew of Artemis II prepares to launch on a historic mission around the moon as soon as February, some experts are worried about the spacecraft’s heat shield.

Old satellites and other space junk fall toward Earth every day, and the shock waves they create could be used to track their trajectories, according to new research.

Veteran NASA astronaut Suni Williams announced her retirement Tuesday. Her extended mission to orbit due to the troubled Boeing Starliner test flight was her final foray.

Four astronauts are set to depart the International Space Station Wednesday amid a health concern. The unprecedented early departure will leave behind a skeleton crew.

Optical proof of a tiny companion orbiting supergiant star Betelgeuse is hard to come by. Hubble just spotted new evidence.

NASA’s upcoming Artemis II flight will be the first crewed lunar mission in over 50 years, but it will not land on the moon. Here’s why.

A group of astronauts will return from the International Space Station more than a month ahead of schedule after an unnamed crew member experienced a medical issue.

Four astronauts splashed down in the Pacific Ocean as they return early from the International Space Station due to a crew member’s medical issue.

Scientists have developed a way to generate tiny amounts of solar energy at night. It’s true potential could be in space.

A monthslong saga featuring tech billionaire Jared Isaacman — President Donald Trump’s on-again, off-again pick to run NASA — has finally come to a close as the Senate confirmed his appointment in a ...

(CNN) — Michaela Benthaus, a 33-year-old German aerospace and mechatronics engineer at the European Space Agency, just became the first wheelchair user ever to travel past the Kármán Line — a common ...