WASHINGTON (AP) — A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the White House to lead a team of outside scientists to study the national security ...

A polarizing Harvard astronomer has been appointed to lead a White House panel studying UFOs. Avi Loeb is leading a new ...

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...

"This is a detective story that can be resolved with better data," Harvard astrophysicist Avi Loeb told Newsweek.

For decades, the question of whether life exists beyond Earth has been the domain of science fiction writers and late-night ...

The best way to find alien technosignatures is to look for ones that have long survived their creators, according to a new paper.

WASHINGTON – They’re out there! The latest batch of newly declassified Pentagon documents about potential alien contact, that is. The Trump administration, on June 12 – the same day a new Steven ...

Explore the Dyson sphere as a star‑scale megastructure, its astrophysics, Dyson swarm variants, and the extreme engineering challenges behind this iconic sci‑fi idea. Pixabay, AstroGraphix_Visuals A ...

A Dyson sphere is a hypothetical megastructure built by an advanced civilization to capture the enormous energy output of a star. Rather than being a solid shell, scientists believe it would more ...

Astronomers propose finding alien civilizations by searching for unusually cold stars that could be surrounded by Dyson swarms—energy-harvesting structures first proposed by Freeman Dyson. House ...