NASA’s first crewed moon mission in decades was delayed as its engineers grapple with an all-too-familiar rocket problem: hydrogen leaks. Fixing the issue is even trickier than it may seem.

A test of NASA's towering Space Launch System rocket uncovered another issue with the vehicle meant to launch astronauts on a ...

The Orion capsule's heat shield had issues during the uncrewed Artemis 1 moon mission in late 2022. Here are the steps NASA ...

Liquid hydrogen has delayed Artemis missions, grounded rockets and frustrated engineers for decades. Yet NASA still relies on it to send astronauts back to the Moon.

California-based aerospace company Vast partnered with NASA to send four private astronauts to the International Space ...

"We don’t know where they are,” said NASA’s planetary defense officer Kelly Fast at the AAAS conference in Arizona this week.

She’s worried about the a-rock-alypse. A planetary defense expert is warning that humanity is defenseless against up to 15,000 undetected near-Earth asteroids that have the potential to take out a ...

For 42 years, NASA satellites have tracked how sunlight powers Earth’s climate. The long record is revealing subtle shifts that could reshape climate predictions. These findings are adding new layers ...