"The consequences, should the hypothesis turn out to be correct, could potentially be dire for humanity," said Avi Loeb.

New photos, including a striking technicolor timelapse, show off the newly discovered interstellar object 3I/ATLAS as it ...

Most comets, including the well-known Halley's, loop through our solar system like cosmic time capsules that formed alongside ...

Scientists now say an interstellar comet discovered earlier this month could be one of the oldest that astronomers have ever ...