Astronomers are uncovering surprising truths about how planets form and evolve, thanks to interstellar visitors like ‘Oumuamua and Borisov and the bizarre ‘inside-out’ planetary system LHS 1903. These ...

Harvard astronomer Avi Loeb suggests interstellar objects like 3I/ATLAS might be seeding life across the universe, proposing a bold mission to intercept and study these cosmic visitors.