The Harvard astrophysicist has devoted years—and thousands of interviews—to the idea that mysterious objects streaking ...

“What I see is cool but it’s not identifiably the moon,” he said in his social media post.

Do little green men exist? Was 'Men In Black' a documentary? Prediction markets price the odds of the U.S. confirming aliens before 2027 - here’s why traders overwhelmingly expect a government ...

NASA's Chandra X-ray Observatory has released four stunning images of cosmic wonders, depicted in red, white and blue for the ...