The Dark Forest Hypothesis offers one of the most unsettling answers to the Fermi Paradox. Maybe alien civilizations are ...

The Great Filter theory suggests advanced civilisations may self-destruct before contacting others, explaining the universe's ...

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

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