By: Stephanie Pappas, LiveScience Senior Writer
Published: 04/13/2013 03:10 PM EDT on LiveScience
DENVER — The size of a proton, long thought to...
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By: Jesse Emspak, LiveScience Contributor
Published: 01/24/2013 03:02 PM EST on LiveScience
How many protons can dance on the head of a pin? The...
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