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"Do you have any idea how fast you were going?" Astronomers use radar to measure the size and shape of an asteroid that whizzed past Earth ... and got a surprise.
A small convenience store-sized asteroid whizzed past the Earth in late January. It's not a danger, but what are we doing to find more of these space rocks?
The near-Earth asteroid 1998 QE2 was found to have a small moon orbiting it.