Comet Happens in a Flash
This image shows a flash produced in a laboratory by a high-velocity bead slamming into dust. Though the flash itself can't be resolved, its brilliant effects can be seen in this three-second time exposure. Scientists say that the collision between Deep Impact's impactor and comet Tempel 1 may produce a similar flash.
Image Number: NASA-PIA02108
Credit: NASA/Ames Research Center
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