Halley's Comet, arguably the most famous comet, is a short-period comet that is visible to the naked eye from Earth. It last appeared in the inner parts of the Solar System in 1986 and is projected to return again in 2061. Know more about it! | Unacademy

In July 1994, 21 fragments from Comet Shoemaker-Levy 9 collided with Jupiter, each capable of causing global catastrophe if they had struck Earth. Discovered in March 1993 by David Levy and Carolyn Shoemaker, astronomers predicted the collision a year in advance after tracking the comet’s fragmented path. See more from Randall: https://www.youtube.com/@TheRandallCarlson | Cosmic Summit

A comet from another star system is flying through ours. The comet, named 3I/ATLAS, is only the third known interstellar object ever observed in our solar system. First spotted in July 2025 by the ATLAS telescope in Hawaii, it didn’t take long for astronomers to realize it wasn’t from here. Its speed and trajectory made it clear: this comet came from deep space. At its closest point to the Sun – called perihelion – 3I/ATLAS was hidden from Earth’s view, blocked by the Sun. But Mars was perfectly