直到五十年代，由于射电天体测量学的发展，实验证明才提供了无可争议的证据，而事实上，这么多年的实践努力并无多大意义。
Not until the development of radio astronomy in the fifties was there incontrovertible experimental verification , but essentially these years of practical striving were irrelevant .
射电天体测量学