Like Apollo 8 in 1968, NASA's Artemis 2 mission from Florida will send a crew of astronauts around the moon and back without ...

NASA’s leadership is shaking things up, announcing a series of major changes aimed at keeping the agency on track for ...

BROOMFIELD, Colorado—One of NASA’s oldest astronomy missions, the Neil Gehrels Swift Observatory, has been out of action for more than a month as scientists await the arrival of a pioneering robotic ...

This is the first of three feature articles Ars is publishing to explore the financial, technical, and competitive dimensions ...

Big Tech companies including Nvidia and Elon Musk's SpaceX are making large bets on a new layer of critical infrastructure ...

The Space Development Agency is slowing the pace of launches for the Pentagon’s low Earth orbit satellite constellation, stepping back from an earlier plan for frequent deployments as it works through ...

Scientists have long observed that nearly every planet in the solar system follows the same flat orbital plane — but the reason goes back billions of years. New insights reveal how chaos in a ...

Earth’s gravity has a lot to do with what people think is up and what is down. Things fall down toward the ground, but that direction depends on where you are.

NASA's DART mission didn’t just change the orbit of Dimorphos, the asteroid it hit. It changed the orbit of the larger Didymos around the sun.

"NASA is committed to achieving the near‑impossible once again," the U.S. space agency's administrator has said.

Humans did not evolve for space. Ironically, because we insist on going there anyway, scientists now know from studying ...

Billions of dollars are flowing into low Earth orbit as governments and private operators race to build satellite ...