A comet from another star system—3I/ATLAS—just made its closest flyby to Earth! It’s only the third interstellar object we’ve ever spotted, and it’s not coming back. Astronomers are geeking out because this rare visitor lets them peek at what comets are like around other stars. Want to see it? There’s a free livestream of its journey online. This is cosmic history in the making! #Science #CometWatch #SpaceNews