Comet ISON

Scientists: No sign of comet after pass around sun
Comet ISON shows off its tail in this three-minute exposure taken on Nov. 19 at 6:10 a.m. EST, using a 14-inch telescope located at the Marshall Space Flight Center. (AP Photo/ NASA)
A comet's 5.5-million-year journey to the inner solar system apparently ended during a suicidal trip around the sun, leaving no trace of its once-bright tail or even remnants...
Comet dances with sun, death; giving mixed signals
In this frame grab taken from enhanced video made by NASA's STEREO-A spacecraft, comet ISON, left, approaches the sun on Nov. 25. (AP Photo/ NASA)
WASHINGTON--Comet ISON is teasing the solar system as it dances with the sun and it's giving astronomers mixed signals.
Approaching comet may outshine the moon in 2013
In this image provided by NASA the Comet Lovejoy is visible near Earth's horizon in this nighttime image photographed by NASA astronaut Dan Burbank, Expedition 30 commander, onboard the International Space Station on Dec. 21, 2011. NASA says there is a new comet blazing toward Earth and it could outshine the full moon when it passes by at the end of next year--if it survives its close encounter with the sun. (AP file photo/NASA)
PASADENA, California--A comet blazing toward Earth could outshine the full moon when it passes by at the end of next year--if it survives its close encounter with the sun.
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