Astronomy

Our galaxy and its nearest large companion, Andromeda, may be headed for a collision on a cosmic scale. What happens then?

An out-of-this-world weather report from NASA’s James Webb Space Telescope reveals how clouds move across a giant planet hundreds of light-years from Earth

The asteroid will swing by Earth on Monday and be close enough to be visible using an amateur telescope

There are parts of the universe, and of the electromagnetic spectrum, that we’re not covering with our telescopes—but not as many as you might think!

Seen just 800 million years after the big bang, an object called LAP1-B is a galactic building block that seems to hold some of the first stars to ever shine

NASA’s moon exploration plans call for nearly 80 launches, nearly 75 landers, 10 moon buggies and one nuclear reactor

The problem with Pluto isn’t its planetary or nonplanetary status—it’s our insistence on declaring the world must be one or the other

This annual meteor shower occurs as Earth passes through the dusty debris left behind by Halley’s Comet as it journeys around the sun

The Kardashev scale is an interesting but flawed gauge of a civilization’s growth

Researchers are perplexed by a galaxy that seems too large and too dusty for its place in cosmic history, less than a half-billion years after the big bang

This galaxy, also known as Messier 104, gets its nickname from its central bulge and outer dust trail, which give it a sombrerolike appearance from our vantage point

New James Webb Space Telescope images could shed fresh light on how dying stars evolve over time