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Image - This image, produced by the Millennium-II Simulation, shows the evolution of dark matter in the universe. (Credit: Milennium-II Simulation) Photo - A blue crystal recovered from a meteorite that fell near Morocco in 1998. The scale bar represents 200 microns (millionths of a meter). Such crystals, which have been studied at Berkeley Lab, have been found to contain liquid water and complex organic compounds. (Credit: Queenie Chan/The Open University, U.K.) Photo - Kitt Peak National Observatory at dusk. DESI, the Dark Energy Spectroscopic Instrument, is housed within the Mayall Telescope dome (right). (Credit: Marilyn Sargent/Berkeley Lab)