December is the month that fans of 3I/ATLAS have been waiting for as the interstellar comet makes its closest approach to ...

As a space reporter for The New York Times, I follow what’s happening in the stars, including eclipses, meteor showers and ...

All 88 internationally recognised constellations have European origins. But First Nations astronomy tells older, beautiful ...

Dark matter and its impact on cosmology have puzzled physicists for nearly a century. At Perimeter Institute, two researchers ...

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

Bright stars and a lone bright planet are visible at dusk as December begins. The Summer Triangle of Vega, Altair and Deneb ...

On most nights, city skies hide the stars. Streetlights, buildings, and cars fill the air with artificial glow that drowns ...

A good satellite tracker app can turn your phone into a personal guide to the cosmos, showing you everything from the ...

U.S. Senators John Hickenlooper and Mike Crapo have reintroduced a bill to limit the number of satellites you can see in the ...

A new study casts doubt on the universe’s accelerating expansion, suggesting dark energy might be weakening over time.

A stunning new discovery reveals our solar system may be connected to distant stars by a vast interstellar “tunnel” carved by ancient cosmic explosions.