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

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

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

Based on evidence collected by the James Webb Space Telescope, researchers have found that interstellar comet 3I/ATLAS could ...

Billions of years ago, while the solar system was still young, a massive object may have drifted into it. It's not a spaceship, but it is an alien visitor in its own right—a colossal interstellar body ...

Exactly where the comet 3I/ATLAS came from within the Milky Way remains a mystery.

A NASA‑linked study argues that alien probes could already be in our Solar System, but our surveys are still too crude to ...

One million alien visitors from another star system could already be lurking in the solar system. We aren't talking about "little green men" here, however — more "little (and not so little) gray rocks ...

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

Life may not get blasted off any of the known "super-Earth" worlds as readily as it can from our planet, scientists find. The discovery suggests that any intelligent aliens that develop on such ...

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