Solar System

Scientists say AI has crossed a critical 'red line' after demonstrating how two popular large language models could clone themselves.

They're calling them "planetary embryos".

The chances of the asteroid 2024 YR4 hitting Earth in 2032 appear to have doubled, but an asteroid hunter explains to Space.com why this isn't cause for concern.

China is preparing to launch a pioneering mission to the moon next year to search for definitive evidence of water at the lunar south pole.

The Argonaut moon lander one way the European Space Agency is getting involved in international lunar exploration endeavors.

Scientists measured a chorus wave emerging from an unexpected place, and confirmed a key piece of a theory about how these strange waves form.

Scheduled to launch on Feb. 27, NASA's PUNCH mission could revolutionize space weather forecasts, unify the solar corona and the heliosphere, and help improve astronomy techniques.

Stunning photos show bright comet lighting up the dark skies above ESO's Paranal Observatory, future home of the world's largest telescope.

The lunar canyons Vallis Schrödinger and Vallis Planck are extraordinarily deep, and scientists now know the valleys were carved by bullet-fast moon rocks.