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

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

Here’s what you’ll learn when you read this story: Every time an interstellar object comes whizzing into our Solar System, it brings with it a certain intrigue. Where is it from? How did it form? Why ...

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 ...

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

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

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

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

The SETI Institute is the latest to confirm what scientists have long suspected: the interstellar 3I/ATLAS comet is not an alien spaceship.

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

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 ...