As much as 45 oceans’ worth of hydrogen may be in Earth’s core, scientists reported, suggesting most of Earth’s water was acquired during the planet’s formation.

The NASA-led Artemis II mission encountered an unexpected issue during ground tests that will delay the highly anticipated launch of four astronauts to deep space ...

The test flight of Boeing’s Starliner capsule — which turned into a monthslong stay in space for two astronauts — was a debacle in the same league as shuttle disasters, NASA said.

Children love to play pretend, holding imaginary tea parties, educating classrooms of teddies or running their own grocery stores. Now, a new study suggests that such make-believe play is not a ...

A planetary system 116 light-years from Earth has a peculiar pattern. It could flip the script on how planets form, scientists say.

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.

Every single curling stone in the Winter Olympics is crafted from a special granite found only on Ailsa Craig, a small uninhabited island off the coast of Scotland.