It may take less than 1,000 years for an advanced alien civilization to destroy its own planet with climate change, even if it relies solely on renewable energy, a new model suggests. When ...

The quest to find extraterrestrial life is an unending pursuit of science, and one aspect of this search revolves around technosignatures. Detectable from as far as 40 light-years away, Earth’s ...

“Hollywood has preconditioned us to expect one of two types of alien contact, either a hostile invasion force or a benevolent ...

The first unmistakable signal from another intelligence would rank alongside fire and writing in the story of our species, ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Astronomers have begun a first-of-its-kind search for signs ...

A cosmologist suggests we should look for exploration, along with energy signatures, to try and find aliens. Dyson spheres of some kind may be built to harvest energy from dark matter in black holes.

After searching 100,000 galaxies for signs of highly advanced extraterrestrial life, a team of scientists using observations from NASA's WISE orbiting observatory has found no evidence of advanced ...

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Long before scientists discovered that other stars in the universe host their own planetary systems, humanity had ...

The Fermi Paradox ponders an endlessly fascinating question: If so many worlds exist in the universe, why haven’t we detected any sign of extraterrestrial life? A possible reason, called the ...

The TRAPPIST-1 solar system, depicted in this artist's impression, might harbor Earth clones with oceans and rich atmospheres. (Photo digital Illustration by NASA/NASA via Getty Images) A young ...