Avi Loeb said bases this hypothesis on a July 21 image captured by the Hubble Space Telescope and shared by NASA.

Harvard's Avi Loeb claims mysterious interstellar object 3I/ATLAS could be nuclear-powered alien technology. Sparks debate ...

Wow”, scribbled Jerry Ehman, encircling the mysterious 72-second burst from the stars, a signal so sharp and unearthly that ...

Comet tails, often seen as beautiful celestial phenomena, are more than just a visual spectacle. They hold critical ...

Over the past couple of weeks there have been some lively showings from the Perseid meteor shower, plus also the conjunction of Venus and ...