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Mark and Scott Kelly, twin brothers and former NASA astronauts, spoke to "CBS Mornings" about how the agency is set to lose ...
Mark and Scott Kelly, brothers was are both veterans of four spaceflights, join CBS Mornings to discuss today's SpaceX ...
-- Astronaut Scott Kelly retired today after 20 years with NASA and spending a year in space. During his career, Kelly completed four separate missions in 1999, 2007, 2010 and 2015, accruing 520 ...