On May 2, as sunlight crept over the Martian horizon, the Odyssey spacecraft captured Arsia Mons, a towering, long-extinct volcano, puncturing a glowing band of greenish haze in the planet’s upper ...

Arsia Mons, which dwarfs Earth's tallest volcanoes, and its two neighboring volcanoes are often surrounded by water ice ...

Heavy cloud cover didn't deter veteran photog Malcolm Denemark from getting a cool shot of a Space X Falcon 9 rocket launch ...

JWST's stunning image of NGC 346 shows that planets in the early universe didn’t form as quickly as theorists thought.

This month will usher in two separate conjunctions — one between the moon and a rarely-visible Mercury, and another between ...

Astronomers using the James Webb Space Telescope (JWST) have unveiled the largest map of the early universe to date, a ...

New data show a 50% chance the Milky Way won't collide with Andromeda. A merger with the Large Magellanic Cloud is far more ...

Astronomers have long thought that the Milky Way is headed for an inevitable crash with its neighbor, Andromeda. But a new ...

Astronomers have long thought that the Milky Way is headed for an inevitable crash with its neighbor, Andromeda. But a new ...