A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the White House to lead a ...

Strange interstellar comet speculated to be alien spacecraft is older than Solar System - Scientists say comet represents ...

The NASA/ESA Hubble Space Telescope reobserved interstellar comet 3I/ATLAS on 30 November with its Wide Field Camera 3 instrument. At the time, the comet was about 286 million kilometers from Earth.

“Disclosure” has become a cult word. It shouldn't be, since all it means, technically, is to reveal something. But the new wave of alien conspiracy theorists have made “disclosure” into a teasingly ...

Add Yahoo as a preferred source to see more of our stories on Google. For decades, humanity has scoured the cosmos for any signs that we aren't alone in the universe. But now, researchers at the SETI ...

Grain-sized remnants of alien technology may get caught in solar wind and land on plants and moons close to us ...

On Wednesday, David Grusch, a former military intelligence officer, told a House Oversight subcommittee that all those stories you’ve read on the internet are true: The government has debris collected ...