7 ms·NASA's head of human spaceflight abruptly resigns, citing 'mistake'7 points by clouddrover 6y agoredis_mlc 6y agoI agree, human spaceflight is a mistake - an expensive distraction from scientific missions.nicesave 6y agoLite version: http://lite.cnn.com/en/article/h_7eda1158db94865aca6bc688110b6b17 http://lite.cnn.com/en/article/h_7eda1158db94865aca6bc688110...