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

Astronomers who detect a credible signal from aliens after 2026 will be barred from announcing it publicly or sending any ...

The IAA SETI Committee has updated rules for evaluating and revealing the detection of extraterrestrial intelligence.

Astronomers swept millions of candidates and found no alien signals from K2-18b, setting the first power limit on any ...

The moment of first contact with extraterrestrials is a staple of science fiction. It usually involves a frantic scientist ...

What steps can be taken to identify why we haven’t received radio signals from an extraterrestrial intelligence, also called technosignatures? This is what a recent study published in The ...

If it were a phone call, we might call it a butt dial: A strong radio signal that set off questions about whether it emanated from an advanced alien race earlier this week is now believed to have come ...

If advanced aliens lived on a planet within a few hundred to a thousand light years away from Earth, then vast numbers of their signals must already have crossed Earth without being noticed, a new ...

How can radio astronomers successfully identify extraterrestrial radio signals while discerning them from Earth-based radio signals? This is what a recent study published in The Astronomical Journal ...

Estimating the chance of getting a message from life beyond Earth, say within the next decade, isn’t easy. Even the best experts are reluctant to offer precise odds. “Anybody who gave you a figure ...