Brian Lacki has released a set of three prepublication studies attempting to rationalize and measure the odds of a ...

The idea was that as an alien civilization advances, its technology becomes too sophisticated for us to detect. We could ...

Previous research suggests that brown dwarfs should contain phosphine—which forms when phosphorus combines with ...

New research suggests that technological civilizations in the Milky Way are extremely rare, with the closest potentially ...

The idea that life on Earth arose through a series of improbable "hard" evolutionary steps may be misjudged, according to a ...

There has been a lot of talk among people who study and follow such things about whether or not interstellar comet 3I/ATLAS is an alien spacecraft. Most ...

Breakthrough Listen will scan the the skies with the aid of the MeerKAT Telescope. They are targeting a million nearby stars.

With the recent discovery of traces of what may or may not be or have been life on Mars, eyes are turning to another world in ...

We’re celebrating 180 years of Scientific American. Explore our legacy of discovery and look ahead to the future. In the late 1800s Italian astronomer Giovanni Schiaparelli pointed a telescope at Mars ...

A new study used mathematical formulas and demonstrated that it’s highly unlikely life began on Earth. Instead, the ...

Complex, intelligent life in the galaxy appears vanishingly rare, with the nearest possible civilization perhaps 33,000 light ...