Ancient comet will make a rare appearance in October 02:22. PITTSBURGH (KDKA) -- An ancient comet discovered last year is passing by Earth, and Pittsburghers may get a chance to see it if ...

Green comet to pass by Earth for first time in 50,000 years 02:17. PITTSBURGH (KDKA) - In the next few weeks, something very neat will be appearing in the night sky.

It’s the ball of ice, rock and dust that everyone is talking about: a fuzzy-looking star with a tail otherwise known as comet NEOWISE. To see it, start to look below the Not unless you live ...

A newly discovered comet, called C/2025 F2 (SWAN), may have disintegrated. But the remnants are still visible.

Scientists have discovered seven more "dark comets," and analysis of this haul suggests that the puzzling planetoids are divided into two distinct families, further deepening the mystery of why ...