A visitor from another star system is quietly making its way out of the inner solar system, and it may be older than the Sun ...

Add Yahoo as a preferred source to see more of our stories on Google. Astronomers have spotted what they think might be an "interstellar object" hurtling through the solar system — and it's headed ...

Compact sensor-packed probes, propelled by laser- or Sun-powered sails, could be humanity's first scouts to another star system.

3I/ATLAS is only the third known object from beyond our solar system ever seen in our cosmic neighbourhood and the first to reach us from a completely different region of our Milky Way galaxy. (Image ...

For obvious reasons, the Sun’s influence weakens as you get closer to the edge of the solar system. But things might be a lot more complicated than we previously thought, according to a new study.