Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically different from anything known to have ever formed around our sun ...

When comet 3I/ATLAS swept through the inner solar system in late 2025, it gave astronomers something no interstellar visitor ...

A mysterious comet from beyond our solar system is giving astronomers a rare glimpse into alien worlds — and it may have ...

Recent research suggests that our solar system could already be hosting alien probes, potentially observing us from a distance. This idea aligns with a 2023 statement from a Pentagon UFO chief who ...

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 ...

There’s a visitor in town, and its name is 3I/ATLAS. The presumed interstellar comet presents a rare opportunity for astronomers to study an object born a long time ago in a star system far, far away.

Should we be concerned? According to Neil deGrasse Tyson, folks are buzzing about a “possible alien flyby in the next six to seven weeks” thanks to a massive celestial object exhibiting unusual ...

Even at a glance, the planets in our solar system are wildly diverse. Huge and small, airless and densely packed with ...