For over two months, astronomers have been closely following an interstellar object — dubbed 3I/ATLAS — as it screams through the solar system at a breakneck speed. The unusual visitor was only the ...

NASA’s Perseverance rover has spent years combing Jezero Crater for subtle traces of ancient microbes, but one of its most arresting finds is something far more blunt: a rock that simply does not ...

Add Yahoo as a preferred source to see more of our stories on Google. An interstellar visitor to our solar system known as 3I/ATLAS has captivated the public for months, and it's not hard to see why.

Despite an abundance of data suggesting interstellar object 3I/ATLAS — the third object ever detected ripping through our solar system — is simply a comet, Harvard astronomer Avi Loeb still hasn’t ...