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

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

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

A newly discovered comet, 3I/ATLAS, may be the most ancient visitor ever detected, potentially older than our solar system ...