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.

Our search for extraterrestrial life has turned up empty, perhaps because technologically advanced civilizations are doomed ...

Aliens: "Sorry, you're cutting out!" The post Something May Be Scrambling Alien Messages, NASA-Funded Research Finds appeared ...

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

For four decades, many SETI experiments have focused on finding sharp spikes in frequency but the new study says signals may not stay narrow as they travel away from their home system.

The Fermi Paradox asks a simple but unsettling question: if the universe is so vast, why haven’t we found evidence of alien civilizations? Scientists have proposed many explanations, but some of the ...

Radio silence has long puzzled those searching for extraterrestrial intelligence, but the answer might lie much closer to the ...

Assuming intelligent aliens know how to harvest energy from stars, would humanity be able to spot these high-level structures?

Scientists are scrambling to explain why interstellar visitor 3I/ATLAS is carrying life's chemical building blocks at concentrations never before seen, and it makes its final pass through our cosmic n ...

A new study by the SETI Institute suggests that the alien signals might be right here, surrounding us all of the time, and we're just unable to pick them out.

But the creepiest layer of Marathon ’s mythology involves entities called the W’rkncacnter — primordial forces of chaos so dangerous they were imprisoned inside stars, black holes, and only ...

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 ...