If Comet ISON 2013 survives as it whips around the sun on Thanksgiving, some predict it could be a spectacular show in December as it flies back to the outer reaches of the solar system and beyond.

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

Comet ISON is now approaching the inner solar system. Discovered last year, the comet remains unusually active for its distance from the sun.

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 ...

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 ...

Excitement continues to rise among both professional and amateur astronomers about Comet ISON, which on Nov. 28 of this year might become one of the brightest comets ever seen, outshining such ...

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 ...

Excitement continues to rise among both professional and amateur astronomers about Comet ISON, which on Nov. 28 of this year might become one of the brightest comets ever seen, outshining such ...

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 ...

The image above is of Comet ISON—technically named C/2012 S1 (ISON)—taken by friend-of-the-BA-blog Adam Block. ISON is a feisty little chunk of ice and rock currently making its way down to an ...

Excitement continues to rise among both professional and amateur astronomers about Comet ISON, which on Nov. 28 of this year might become one of the brightest comets ever seen, outshining such ...

PANSTARRS and ISON are just two of the highlights coming up for skywatchers next year. Here's my top-10 list for 2013, plus some bonus picks from Space.com skywatching columnist Joe Rao: ...