3I/ATLAS was discovered by NASA's Asteroid Terrestrial-impact Last Alert System (ATLAS) on 1 July, and is just the third ...

“They happen to be very close to each other in the sky right now,” he says. “The closest approach was actually this (Tuesday) ...

On the subject of Comet 3I's unnaturalness, Harvard physicist Avi Loeb has admitted to having concerns about the discovery in ...