Astronomers discovered 3I/ATLAS, a 10–20 km-wide interstellar comet racing into the solar system. It will reach perihelion in ...

Solar systems mostly keep to themselves. What’s ours is ours and what’s not is not. Stars are simply too far from each ...

The space agency spotted the quick-moving object with the Atlas telescope in Chile earlier this week, and confirmed it was a ...

The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

Based on the comet's brightness and current distance — it's located just inside Jupiter's orbit — scientists estimate its ...