These monster objects, known as Giant Radio Quasars, are part of a clutch of 369 radio quasars recently discovered by Indian ...

Rocks that stood out as light-colored dots on the reddish-orange surface of Mars now are the latest evidence that areas of the small planet may have once supported wet oases with humid climates and ...

Earth may have a moon today because a nearby neighbor once crashed into us, a new analysis of Apollo samples and terrestrial ...

Something weird is going on on the far side of the Moon — and Artemis astronauts are heading straight there. The giant South Pole–Aitken basin, a 4.3-billion-year-old scar, isn’t just an impact crater ...

Find out what's up in your night sky during December 2025 and how to see it in this Space.com stargazing guide.