An Autumn of Comets. Overview This coming autumn brings a thrilling lineup of comets visible from both hemispheres, framed as a “parade of comets” for skywatchers ...

Scientists are trying to learn as much as they can about our third ever discovered interstellar visitor, 3I/Atlas, as it continues zooming through the solar system, and the latest clues about the ...

The comet will come closest to Earth on Oct. 20. There's hope that it may become bright enough to glimpse with the naked eye.

The origin of Earth's water is an open question. The Earth should have formed from pretty dry materials, so at least some of the water comes from extraterrestrial sources. Comets were the first ...