Less than three weeks before comet ISON’s closest encounter with the sun, the comet is now sporting a cool double tail. Like those of most comets, ISON’s dramatic tail is growing as it moves ...

Comet ISON had been dubbed the Comet of the Century. When it was first spotted in September 2012, some scientists believed it had the potential to shine brighter than the Moon.

Comet ISON blazes through the night sky on its dangerous journey toward the sun in this great photo recently sent to SPACE.com. Astrophotographer Adam Block captured this amazing image of the ...

Comet watchers will have to wait until ISON, or what’s left of it, are a bit further from the sun to get more information. “What we see here is the dust tail emerging first, pointing away from ...

Experts with NASA say another comet's tail-clipping encounter with the sun in 2007 presents a forbidding example of what could happen to Comet ISON. Skip to main content.

But as it approached its closest point to the sun at 1:48 p.m. ET, the half-mile point of the comet faded and the tail thousands of miles across became fuzzier. That suggested it might have broken up.

During the last few days, observers worldwide have noticed a noticeable upturn in the overall brightness of Comet ISON as well as a lengthening of its tail. While Comet ISON has remained somewhat ...

A comet that gained an earthly following because of its bright tail visible from space was initially declared dead after essentially grazing the sun. Now, there is a sliver of hope that Comet ISON ...

Since this is based on ISON, this might be why it is predicted to have such a HUGE tail. If you want to play around with different sized dust - here is the vpython code , have fun. Ok, next model.

Something emerged from the sun after Comet ISON made its closest approach today. Is it the ISON? NASA scientists, professional and amateur astronomers are analyzing images from NASA satellites to ...

Comet of the century. Comet ISON had been dubbed the Comet of the Century. Ever since it was first spotted in September 2012 scientists believed it had the potential to shine brighter than the Moon.