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Search title: Science News on Twitter: "#OTD in 1961, Science News reported that a single stage nuclear rocket could make a roundtrip to the moon possible for the "bargain price of $600" -- "much less than the present average cost for a vacation trip to Europe." #SN100 https://t.co/fkwBpVjOR3 https://t.co/gcORfONYGi" / Twitter

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