Astronomy

Black holes more massive than entire galaxies are not a major component of dark matter, the mysterious stuff that's thought to make up most of the matter in the cosmos, a new study finds.

Researchers think they might have pinpointed the exact night sky that we see depicted in Vincent van Gogh's iconic painting "The Starry Night."

A satellite image of "Spider Crater" in Western Australia.

If you were approaching the edge of a spiral galaxy, arriving from afar through the cosmos, it might look something like this.

NASA's OSIRIS-REx asteroid-sampling mission formally ended on Sept. 30, 2026, though scientists will continue to study the pieces of space rock it returned for decades.

One new study shows how much the moon has diminished over time.

Using NASA’s SPHEREx spacecraft, astronomers have studied a horde of mysterious "failed stars," or brown dwarfs, not-so-stellar loners that wander the darkness of space alone.

The European Space Agency's Copernicus Sentinel-3 satellite mission captured a close-up of West Antarctica from its perch high above Earth.

Known as the giant-impact hypothesis, this proposed event involves a collision between Earth and a hypothetical Mars-sized protoplanet astronomers call Theia.