Since the discovery of Comet ISON in September 2012, astronomers worldwide have eagerly anticipated its peak performance in late 2013. Many have high hopes that ISON will turn out to be a glorious ...

CAPE CANAVERAL, Florida (Reuters) - Astronomers slated to meet this week to discuss observing plans for Comet ISON may not have much to talk about. The so-called "Comet of the Century" may already ...

Holy carbonated comets Batman! NASA's Spitzer Space Telescope took a look at Comet ISON on June 13 and observed a gassy atmosphere created by frozen carbon dioxide ice slowly fizzing away in sunlight.

(Update: Thanksgiving Day, 2:18 PM ET: Astronomers working with NASA’s Comet ISON Observing Campaign (CIOC) continue to monitor ISON’s progress as it swings around the sun. No word yet on its ...

The Balloon Rapid Response for ISON (BRRISON), built and managed for NASA by The Johns Hopkins University Applied Physics Laboratory, lifted off at 8:10pm EDT from Fort Sumner, N.M., on a mission that ...

Comet ISON has taken the summer off, hiding from the eyes of Earth-based telescopes in the constellation Gemini the Twins. Not only does the comet remain faint, but it's in the same area of the sky as ...

CAPE CANAVERAL, Florida (Reuters) - A comet is heading for a close encounter with the sun later this month, and if it is not vaporized or torn apart, it should be visible to the naked eye in December.