It may not look like much in this sequence of images taken by NASA's Deep Impact spacecraft from a distance of half a billion miles in January, but the comet identified as C/2012 S1 (ISON ...

Experts believe the light can either be clouds of dust from the Ison comet or its nucleus. Scientists had been observing the Ison comet for the past year. When the comet reached the sun's orbit ...

The much-anticipated Comet ISON swoops by this morning lineup, appearing between, and to the right of, Spica and Mercury on Nov. 20 and near the Mercury-Saturn pair on Nov. 23 and 24. On Nov. 28 ...

Comet ISON - called by some the "comet of the century" made its way around the sun tonight, but we aren't sure if it survived the trip or not. What happened to the chunk of rock and ice determines ...