Contact: Paul Preuss
DOE/Lawrence Berkeley National Laboratory
Caption: Do atoms of antihydrogen weigh the same as atoms of ordinary hydrogen? Could they even have "negative" weight, pushing them away from ordinary mass? Scientists from Berkeley Lab and UC Berkeley have used data from the ALPHA Experiment at CERN to measure antimatter gravity directly.
Credit: Illustration by Chukman So
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Related news release: Does antimatter fall up or down?