“Once in a Civilization” Comet to Zip past Earth Next Year | Observations, Scientific American Blog Network:
"As it flares out of the distant Oort Cloud, the newly discovered comet C/2012 S1 (ISON) appears to be heading on a trajectory that could make for one of the most spectacular night-sky events in living memory. Why is this comet expected to be so unique? Two reasons:"
'via Blog this'
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