Miguel Claro took one last look at the comet as it bid farewell to Earth for the next 80,000 years.

The long-serving space telescope saw the third interloper to enter the solar system from beyond its limits late on Monday ...

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

However, we might also want to look for hints of alien origin. One very strong piece of evidence would be any kind of radio ...

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

The Gemini North telescope in Hawaii recently snapped a close-up of the comet that's captured the world’s attention.

Comet 31/ATLAS, a rare interstellar object, may be 7 billion years old and could reveal secrets about the early Milky Way and ...