Physicist Richard Feynman argued that fundamental limits of physics, biology, and time make interstellar contact between ...

The third confirmed interstellar body to visit our solar system is being revealed as a time capsule from a very different ...

Add Yahoo as a preferred source to see more of our stories on Google. A team of researchers has presented the wild theory that an interstellar object might be hostile "alien technology" that could ...

Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically ...

The object, named 3I/ATLAS, was discovered on July 1 and is only the third known interstellar visitor ever detected. Like its 2017 predecessor 'Oumuamua, it's attracting attention for its unusual ...