A newly released study of unusual asteroid orbits strengthens the case for the hypothesized distant, massive Planet Nine.

Editor’s note: This article on K2-18b was first published in September 2023 on The Conversation. The Times of London reported ...

This pair of objects were the subject of a controversy that threatened to undermine our basic understanding of cosmic ...

If the JWST can see galaxies billions of light-years away, why can’t it find the proposed Planet X in our solar system?

PRIMA — the Probe far-infrared Mission for Astrophysics — is in the proposal stage, with hopes to be launched by the end of ...

Human spaceflight has long been a goal for SpaceX, the rocket and satellite manufacturing venture of billionaire Elon Musk.

The Moon moves down an early-morning line of planets while Eta Aquariid meteors streak through the sky this week.

The long-delayed Starliner mission, if successful, will give NASA and future space tourists more options for getting to low ...

Discovering new black holes is no easy feat — where do you even begin to look? New data and techniques help us get closer ...

The volume density of asteroids in the main belt about 10 times higher than that of Jupiter’s Trojan asteroids.

Barry Wilmore and Sunita Williams will be aboard the Starliner, scheduled to launch at 10:34 pm EDT on Monday, May 6.

Approximately 5,000 meteorites are heating up and sinking into the ice every year and becoming inaccessible, a new study finds.