Glenn Says Gingrich Moon Colony Plan `Optimistic'

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Jan. 27 (Bloomberg) -- John Glenn, the first U.S. astronaut to orbit the Earth, talks with Bloomberg's Mark Niquette about Republican presidential candidate Newt Gingrich's goal to establish a permanent moon base by 2020 if elected. Glenn, a former Democratic senator, also discusses the U.S. space program and the 50th anniversary of his Friendship 7 orbital flight on Feb. 20, 1962.