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

NASA has discovered a mysterious interstellar comet entering our solar system. Learn what this strange visitor is and how scientists are tracking it now.

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

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

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

Folks, it's official: the object that astronomers recently spotted blowing through the outer solar system came from ...

This week, a 125,000-year-old Neandertal “fat factory” reveals that they gorged on energy-packed bone grease, a new study has ...

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

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

Interstellar comets offer the tantalizing opportunity for us to touch something truly otherworldly,” says the European Space ...