PITTSBURGH (KDKA) -- An ancient comet discovered last year is passing by Earth, and Pittsburghers may get a chance to see it if conditions are right. KDKA-TV went to Pittsburgh astronomers and ...

PITTSBURGH (KDKA) — People reported seeing a meteor streak across the sky in the Pittsburgh area on Monday night. Lisa D. shared a doorbell camera video from around 7 p.m. that captured a bright ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. When a new comet ...

It had no bright dust tail, like most comets, and had a peculiar shape – something between a cigar and a pancake. But the object also had a weird orbit: It accelerated away from the sun in a ...