Images of the Apophis asteroid are currently being streamed live on Slooh.com.
There is a one in 25,000 chance the asteroid could hit the Earth in 2013.
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After a remarkably mild November - a notable mild start to the new month.
The Facebook founder revealed the plan as he and wife Priscilla Chan announced the birth of their baby daughter, Max.
At least 300 people are actively promoting and recruiting for the terror group from within the United States, academics have found.