A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

Strange interstellar comet speculated to be alien spacecraft is older than Solar System - Scientists say comet represents ...

In July 2025, astronomers spotted something remarkable passing through our Solar System, an object that had not come from ...

SETI scientists searched the interstellar object 3I/ATLAS for radio signals that could indicate extraterrestrial technology ...

Grain-sized remnants of alien technology may get caught in solar wind and land on plants and moons close to us ...

Harvard astrophysicist Avi Loeb, known for his controversial extraterrestrial theories, is now leading a new Trump ...

The best way to find alien technosignatures is to look for ones that have long survived their creators, according to a new paper.

A new SETI study argues that turbulent space weather around distant stars can smear out ultra‑narrow alien radio signals, ...

Just three decades ago, astronomers had no evidence that planets commonly orbited other stars. Then in 2025, NASA confirmed ...

NASA and the European Space Agency announced Monday that the James Webb Space Telescope has produced the first mid-infrared chemical fingerprint ever obtained from an interstellar object, detecting ...