Halloween is upon us and the 2025 spooky season is abuzz with talk of three cosmic visitors — Comet Lemmon, Comet SWAN and ...

Astronomers have discovered a rare planetary system that dances to a cosmic rhythm. Located 105 light-years away in the ...

Harvard astronomer Avi Loeb has argued at length that 3I/ATLAS — the third-ever interstellar object ever detected, currently ...

There is no evidence to support the idea that this interstellar object is anything but a comet, but let's double-check.

Siddharth Patel, a 12-year-old who lives in London, Ontario (west of Toronto), spotted two possible asteroids in September as ...

Study discovered that Chiron, a small icy world between Saturn and Uranus, is forming rings. This shows how small worlds ...

Other than being a ‘Trojan Horse’ alien spaceship set to release probes to study our planet, or crashing into Earth, neither ...

Tests on olivine hint that water-rich exoplanets could generate H2O internally, possibly explaining ocean worlds and even some of Earth’s early water.

Astronomers have found GJ 251 c, a rocky planet. It is a super-Earth located only 18 light-years away. This planet is in its ...

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

On04, Osama bin Laden, in a videotape to the American people, said he ordered the Sept. 11, 2001, attacks on the United ...

Astronomers have identified GJ 251 c, a super-Earth exoplanet just 18 light-years away, orbiting within its star's habitable ...