What does 3I/ATLAS stand for? Where is it from? Everything you need to know to geek out about our interstellar guest

A rare cosmic visitor, 3I/ATLAS, the third confirmed interstellar object, was discovered in July 2025. This object, on a hyperbolic orbit, originated from beyond our solar system and will depart permanently. Visible only through powerful telescopes as a faint blue-green dot, it offers a unique opportunity to study material from another star system.