Bill Nelson, now administrator of NASA, speaks during a Senate Committee on Commerce, Science, and Transportation confirmation hearing on Capitol Hill on April 21, 2021 in Washington, DC.Saul Loeb-Pool/Getty ImagesNASA chief Bill Nelson accused China on Wednesday of secretly working on military projects in space.Nelson told lawmakers that NASA believes Beijing is masking these projects as civilian efforts.Nelson often warns of dire consequences if China reaches the moon first.