Avi Loeb, a cosmologist who studied black holes and served as head of Harvard’s astronomy department until 2020, has been ...
The Harvard astrophysicist has devoted years—and thousands of interviews—to the idea that mysterious objects streaking ...
Astronomers have recently started looking for black holes bigger than galaxies. Brian Lacki explains how these “stupendously ...
The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...
As much as Steven Spielberg likes aliens, he seems to prefer holding them at arm’s length. The creatures in Close Encounters ...
A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...
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