This is the fourth comet Gröller has discovered, but given its extraordinary distance, it was the most exciting find, he says ...

On average, 10 long-period and 20 short-period comets cross Earth's orbit each year. Short-period comets orbit the Sun in less than 200 years and exist in the Kuiper Belt just beyond Neptune ...

As the comet gets close to the sun, it gets warmed up and its icy material transforms from solid to gas. This process creates long tails and an atmosphere around the nucleus, called the coma.

On Friday night, the full moon will be eclipsed by the shadow of the Earth, and in the darkness of Saturday morning, just hours after the eclipse, a green-tinted comet will make its closest flyby ...

G3 (ATLAS), the 'Great Comet of 2025,' lit up the night sky in Chile, offering a rare and breathtaking sight for stargazers, ...