A comet is basically a dirty iceball composed of rock and ice. The classic image is of a bright "star" in the night sky with a long curved tail extending into space.

Comets are giant icebergs in space and hang out in the cold depths of the outer solar system. They typically release gas as they heat up slightly when they come close to the sun—a coma.

Artwork: The interstellar visitor was detected in our Solar System last year The first known comet to visit us from another star system has an unusual make-up, according to new research.

When not wallowing in weird gear and iPad apps for cats ... night and barely caught sight of the misty-looking tail of Comet C/2023 A3 (Tsuchinshan–ATLAS). It makes me wish I was in a spacecraft ...

Skywatchers are in for an extraterrestrial treat in the days leading up to Oct. 31 because of a rare comet that is swirling through space and has the potential to be viewed from Earth. This is no ...

The next eight weeks are going to be very exciting for people in the Gem State who love astronomy. A unique opportunity to ...