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 ...

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The Comet ISON appears to have survived after disappearing and being thought dead. New NASA photos show the comet emerging from behind the sun smaller and dimmer, but still throwing a big light trail.

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 ...

ISON is currently visible in the constellation Virgo. The best time to see it is early on a clear morning. Astronomers have monitored Comet ISON (C/2012) since it was discovered last year. Its unusual ...

WASHINGTON (AP) — Comet ISON, once optimistically called the comet of the century, is dead, the victim of a way-too-close brush with the sun. It was barely a year old. The comet, which excited ...

(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 ...

In the furor of following Comet ISON, we've almost lost track of another fine, fuzzy fellow - Comet Lovejoy. Last we checked in on this comet during the first half of November, it had swelled to ...

Comet Ison streaks toward the sun and emerges from its encounter as not much more than a ball of dust. (Source: NASA/STEREO) |Update 10:30 a.m. 11/29/13: As I noted in my first update immediately ...