A comet born around another star is carrying water unlike anything ever measured in our solar system. Interstellar comet ...

If confirmed, the rock would become just the second world past Neptune in our solar system to host an atmosphere.

A new solar telescope at Paranal studies the Sun to reduce stellar noise, helping scientists better detect and study ...

An interstellar comet carries water unlike anything in our solar system, revealing a far colder birthplace and clues about ...

The interplanetary comet 3I/ATLAS is remarkably rich in a specific type of water that contains deuterium, meaning it came ...

New research suggests that a massive, unidentified object might have passed through our Solar System billions of years ago, leaving a lasting imprint on the orbits of our planets. This intriguing ...

An international team including astronomers from the Center for Astrophysics | Harvard & Smithsonian (CfA) has announced the discovery of a planet about twice the size of Earth orbiting its star ...

Our solar system may not be as isolated as we once thought. According to a new study, more than 1 million interstellar objects could be lurking in the outer reaches of our cosmic neighborhood, quietly ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

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 ...

A passing star, or a stellar flyby, with the potential to pull Neptune out of its orbit by just 0.1%, could mean catastrophe for the entire solar system. But don’t worry — it won’t happen in our ...