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.

Earthlings, brace yourselves: the galaxy may be emptier than your last Tinder date. According to a new study, any alien ...

Ever since physicist Freeman Dyson first proposed the concept in 1960, the "Dyson sphere" has been the holy grail of ...

Scientists are scrambling to explain why interstellar visitor 3I/ATLAS is carrying life's chemical building blocks at ...

New SETI research suggests space weather like solar winds could be interfering with alien radio signals, making them harder ...

Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about modern anxieties than the past itself?

A civilization capable of interstellar travel may also be one that has moved beyond conquest, excess and ecological ...

As per a new study, Dyson spheres around faint stars in the galaxy could offer new techno-signatures clues.

The molten planet, with an atmosphere rich in sulfur-bearing gases, is unlike anything astronomers have ever smelled.

Scientists have uncovered a hellish “lava world” where temperatures soar to a blistering 2,700 degrees Fahrenheit — hot ...

Add Yahoo as a preferred source to see more of our stories on Google. Did Obama confirm the existence of aliens, only to walk it back? After saying “they’re real” on Brian Tyler Cohen’s podcast, the ...