Voyager 1 has been exploring the cosmos for decades, but when it reached the edge of the solar system, it found something ...

The first interstellar object to visit the solar system may have been a fragment of an icy exoplanet, research suggests. "Everything about this object is consistent with it being a slab of nitrogen ...

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 ...

Big questions about 3I/ATLAS remain, some of which may be impossible to answer — including where exactly it came from Big questions about 3I/ATLAS remain, some of which may be impossible to answer — ...