Fluctuating levels of radioactive iron-60 suggest the solar system recently entered a cosmic cloud.

The solar system is now at the edge of this cloud, but the massive stockpile of cosmic stardust has left signatures on ...

Earth is quietly collecting radioactive debris from an ancient stellar explosion as our Solar System drifts through a giant ...

A new image has revealed the clearest glimpse yet of an interstellar visitor zipping through our solar system.Video above: Astronomers discover how planets formThe Hubble Telescope and its Wide Field ...

Recent astronomical observations have thrown a curveball at our understanding of the cosmos. The solar system, it seems, is hurtling through space at a velocity three times greater than previously ...

Long before 3I/ATLAS slipped through the inner solar system, its water had already recorded the kind of place it came from.

The National Aeronautics and Space Administration has confirmed an interstellar object is passing through our solar system. The object is a comet hailing from the direction of the constellation ...

Key takeaway: What is 3I/ATLAS? This comet, discovered by the NASA-funded Asteroid Terrestrial-impact Last Alert System (ATLAS), was first detected 420 million miles from the sun on July 1. The Hubble ...

The presence of deuterium, an isotope of hydrogen, in 3I/ATLAS suggests the interstellar comet formed in a much colder place ...