The first unmistakable sign of extraterrestrial technology may not arrive as a calm greeting. It may look more like a flare.

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 ...

The search for alien life no longer feels like pure speculation. This video walks through the strongest signs ever put forward, from the Wow Signal to Martian fossil claims and other near-breakthrough ...

A recent SETI Institute study suggests that space weather could blur and weaken extraterrestrial radio signals long before ...

Aliens may have been trying to contact humans for years, suggests new research. But stellar “space weather” could mean radio signals from friendly extraterrestrial intelligence get lost in space, say ...

A new scientific framework suggests that even if signals or physical traces from alien civilizations reached Earth, detecting ...

Radar systems used by civilian airports and military operations may be unintentionally revealing our planet's existence to potential "extraterrestrial observers." This is the conclusion of a study ...

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 ...

People have been looking up at the Milky Way for thousands of years, marveling at its vastness. It was only a matter of time before they began to wonder if life similar to ours could exist on the ...

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