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.

The photos reveal a bright and well-developed coma, the cloud of gas and dust surrounding the comet's nucleus, with striking ...

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

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