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 ...

Image: Conceptual illustration of a possible signal from an alien civilization reaching Earth.Detecting such signals — or ...

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 ...

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 ...

The search for extraterrestrial intelligence (SETI) has yet to detect alien technosignatures like radio waves, but the cosmos is vast, and there are plenty of places left to look. New research ...

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

Discover the mysterious ‘Wow!’ signal, a 1977 transmission that sparked decades of speculation about extraterrestrial life.

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 ...