Post

That small dot moving left to right is 3I/ATLAS. It's a comet that was discovered on 1 July 2025. It's travelling at 58 km PER SECOND and isn't gravitationally bound to the Sun. Which means you're looking at a comet that formed around another star, passing through the Solar System.

No, it's following a hyperbolic trajectory which means it's not gravitationally bound to the Sun. Which means it didn't originate in this system.

1 repost13 likes