Astronomers are tracking a newly spotted comet hailing from parts unknown, only the third time such an interstellar object ...

Beyond the fact that this is the third known interstellar object to have entered our solar system, “we don’t know very much,” ...

NASA’s ATLAS survey telescope found an interstellar comet, which could be the largest yet, in the direction of the ...

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

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