Interstellar comet 3I/ATLAS swings by Earth in December 2025

Technology Dec 16, 2025

Heads up, space fans: interstellar comet 3I/ATLAS will make its closest pass to Earth on December 19, 2025.
It'll be about 170 million miles away—so no danger, just a cool cosmic visitor.

What makes this comet special?

Spotted by the ATLAS survey in mid-2025, 3I/ATLAS is only the third confirmed interstellar object ever found.
It sports an icy core and a glowing coma of gas and dust, which means it's definitely a comet from beyond our Solar System.

Can you see it?

After reappearing from behind the Sun in late October, you might spot its faint glow through a mid-sized telescope if you're somewhere dark.
A rare treat for skywatchers!