Astronomers from the University of Maryland at College Park (UMCP) and Lowell Observatory in Flagstaff, Arizona, have used NASA's Swift satellite to check out Comet ISON (C/2012 S1), which may ...

See photos of the comet C/2012 S1 (ISON), or Comet ISON, which could amaze the world in late 2013.

Comet ISON could shine brightly in the night sky around the time of its close solar approach on Nov. 28. Here's the lowdown on ISON and its journey through the inner solar system, which scientists ...

Did Comet ISON survive its brush with the sun? Four days after the comet made its closest approach to our nearest star, the scientific consensus is “probably not.” Yes, something did survive ...

Comet ISON on Nov. 16, 2013. Click to embiggen. Photo by Waldemar Skorupa, via CIOC and spaceweather.com Over the years we’ve had some pretty amazing comets swing by our planet. I remember the ...

It looks like comet ISON has flamed out after its trip around the sun.

Fragments of the comet will still be useful to NASA researchers. Dec. 3, 2013 -- Comet ISON may no longer be streaking across the sky, but that doesn't mean it's completely obliterated. Dean ...

Comet ISON, a "shining green candle in the solar wind," is no longer with us, NASA declared Monday morning in a tribute to what many hoped would be the "comet of the century." On NASA's Comet ISON ...

The anticipation is building for Comet ISON's potentially dazzling night sky show this month and a new mobile app promises to help skywatchers spot the comet with telescopes, binoculars and their ...

ISON, the most closely watched comet in recent years, may be falling apart as it nears its close encounter with the sun.

ISON has been billed as a potential " comet of the century," with some experts saying it could blaze as brightly as the full moon around the time of its close solar approach in late November. But ...

For months, all eyes in the sky have pointed at the comet that's zooming toward a blisteringly close encounter with the sun.