This image shows asteroid 2012 DA14 and the Eta Carinae Nebula, with the white box highlighting the asteroid's path. The image was taken using a 3" refractor equipped with a color CCD camera. The telescope is located at the Siding Spring Observatory in Australia and is maintained and owned by iTelescope.net. Aaron Kingery/NASA/MSFC hide caption

toggle caption Aaron Kingery/NASA/MSFC

A meteor's vapor trail above the city of Chelyabinsk, Russia, on Friday. Vyacheslav Nikulin /EPA /LANDOV hide caption

toggle caption Vyacheslav Nikulin /EPA /LANDOV

An illustration of what asteroid 2012 DA 14 may look like as it approaches Earth. NASA/JPL-CalTech/EPA /LANDOV hide caption

toggle caption NASA/JPL-CalTech/EPA /LANDOV

Nell Greenfieldboyce, for the NPR Newscast

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