space

The Leonid meteor shower peaks in North America overnight from Nov. 17 to 18, with fast-moving fireballs possible in US skies.

Astronomers using the James Webb Space Telescope have detected possible signs of gases released by volcanic activity on a distant exoplanet.

The James Webb Space Telescope's discovery of unusually bright and massive galaxies soon after the Big Bang has cast doubt on the standard model of galaxy evolution and bolstered a rival theory for how physics may work on large scales, according to a team of astronomers.

On what would've been the astronomer's 90th trip around the sun, here's a look at his legacy as a scientist, advocate and communicator.

A shrieking skull, a cackling witch, a ghostly hand and other cosmic illusions haunt our skies. Which do you think is the spookiest object in the universe?

New theoretical research suggests primordial black holes could one day help researchers locate invisible dark matter.

New research suggests holographic dark energy could stop the universe's expansion.

Although it isn't clear what the X-37B is used for, its new maneuver would help it to evade detection and perform undetected low-passes over Earth.

In the coming weeks, NASA's Europa Clipper will take off on a long journey to Jupiter's moon Europa. The icy moon could potentially host alien life — and there's only one way to find out.

The moon's distance from Earth changes depending on where it is in its elliptical orbit.