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Controlled fusion
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Pneumatolytic
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Devonian
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iPod Nano
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Abortion
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Narcotic
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Myoglobin
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Germanium
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Protocol D
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Dense Plume
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Cosmos 1
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Active centre
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Flag
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Hereditary disease
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Dormitory
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Nanomachine
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Proteoglycan
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Waste
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Nanofiltration
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Land surveyor
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PET
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Spectral line
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Electronic signature
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Debugger
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Twofish
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Modem
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Nuclear power plant
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Levorotatory
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Dictionary attack
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Ampelosaurus
Rich cluster of galaxies
A rich cluster of galaxies is a cluster of galaxies containing hundreds of large galaxies. The nearest rich cluster is Virgo. The richest of these clusters may contain thousands of large galaxies. Most of the rich clusters in the near universe are listed in Abell's catalogue.
Rich cluster of galaxies
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