Brian Lacki has released a set of three prepublication studies attempting to rationalize and measure the odds of a ...

Is it a vessel from a distant civilisation or simply a cosmic snowball on a lonely journey? As the interstellar object known ...

A mysterious cigar-shaped object spotted tumbling through our solar system last year may have been an alien spacecraft sent to investigate Earth, astronomers from Harvard University have suggested.

I/ATLAS, a mysterious interstellar object racing toward the Sun, is baffling scientists with its speed and origin. Some ...

Is 3I/ATLAS an alien space probe? An irregular comet? Debate rages around status of 3rd interstellar object ever spotted. Harvard astrophysicist Avi Loeb discusses implications with ‘Magazine.' An ...