Last Updated: Monday, June 17, 2013, 11:04
Scientists have discovered that a big asteroid that flew past Earth last month belongs to a new category of space rock, thanks to new radar images captured by the Arecibo Observatory in Puerto Rico.
Last Updated: Saturday, June 23, 2012, 16:17
A potentially hazardous asteroid thought to have been 500 meters wide, which drifted safely by coming within 14 lunar distances from Earth on Thursday.
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