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@senbillnelson 's outsized influence on #NASA over four decades is undisputed, but some of us in the #SpaceCommunity are concerned this may not be a feature 馃憥. Senator #Nelson鈥檚 imprint on the #SpaceProgram has led to grand pronouncements based on #unrealistic industry estimates, multibillion-dollar 馃挵 #cost overruns, years of schedule #delays and unmet expectations 馃槧 https://www.scientificamerican.com/article/bill-nelson-isnt-the-best-choice-for-nasa-administrator/