The Fermi Paradox assumes that advanced alien life would be detectable by the methods we're using to look for it — and the ...

In 1944, 29 reindeer were introduced to St. Matthew Island for emergency food. Without predators, the herd exploded to 6,000.

NASA's Perseverance rover has uncovered one of the most intriguing clues yet in humanity's search for life beyond Earth.

New research suggests that alien radio signals may be transformed by plasma from their home stars — and scientists on Earth ...

NASA’s Perseverance rover has uncovered what may be the strongest evidence yet of ancient life on Mars. Inside a ...

The Pentagon released over a hundred newly declassified files related to UFOs (now officially referred to as Unidentified ...

A NASA astronaut preparing for a grueling eight-month stint in orbit reveals a plan to test for extraterrestrial life.

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar ...

In the book version of “Project Hail Mary,” author Andy Weir, known for grounding his fiction in plausible science, describes ...

Astronomers say interstellar comet 3I/ATLAS may be up to 12 billion years old, making it far older than the Solar System. New ...

The recent discovery of an enigmatic substance on the surfaces of both Titan, Saturn’s largest moon, and Pluto, our solar ...

Efrem Rigotti actually just wanted to find his car keys. Instead, he came across a mysterious object. Now it's clear: it's from outer space.