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

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

Astronomers are monitoring an object headed our way that may have wandered over from another star system. Scientists have ...

Scientists have been working on ways to find new worlds far from Earth, and this strange method theorized decades ago has ...

NASA said the comet will make its closest approach to the sun in late October, scooting between the orbits of Mars and Earth ...