A new survey of hundreds of astrobiologists reveals that, despite NASA's high-profile declarations about Mars and exoplanet ...

Imagine the possibilities of discovering alien life on the super-Earth exoplanet K2-18b.

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for ...

On Religion columnist Terry Mattingly writes about the centuries-spanning debate over UFOs, aliens and their religious ...

A comet from another star system does not arrive every year. That is part of what made 3I/ATLAS so compelling when it ...

An Introduction The Fermi paradox presents a perplexing contradiction that intrigues scientists, philosophers, and the general public alike. Despite the vastness of the universe, the high probability ...

Overlooking signs of alien life may be humanity’s biggest mistake, according to scientists warning NASA could miss hidden ...

Scientists at the SETI Institute recently searched for technological signals from 3I/ATLAS, the third interstellar object ...

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Suppose there are signs of extraterrestrial life and we have not yet been able to detect them. What does that mean? In Nature Astronomy, researchers discuss the consequences of these so-called ...

Even though astronomers didn’t detect alien tech signals from a rare interstellar visitor, the results are worthwhile, they ...

Scientists propose that a moon base could act as an isolated first line of biological defense against extraterrestrial ...