One of them could be heading our way now.
A new ScienceCast video explores the possibility that Comet Pan-STARRS will be visible to the naked eye in early March. Play it!
In early March, the comet will pass about 100 million miles from Earth as it briefly dips inside the orbit of Mercury. Most experts expect it to become a naked-eye object about as bright as the stars of the Big Dipper.
"But" says Karl Battams of the Naval Research Lab, "prepare to be surprised. A new comet from the Oort Cloud is always an unknown quantity equally capable of spectacular displays or dismal failures."
More - Link >>> http://science.nasa.gov/science-news/science-at-nasa/2013/06feb_panstarrs/
Source: NASA Science News.
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