Even as a brilliant, naked-eye comet slices through Earth's sky (cheers, Comet Lemmon!), the most famous object in the solar system right now is hidden on the far side of the sun: the interstellar ...

3I/ATLAS has fascinated and alarmed stargazers for weeks with its strange trajectory and weird anti-tail, convincing many that the Manhattan-sized interstellar visitor is a spaceship sent to probe ...