Yuri Gagarin made a successful space flight in 1961. Human's uncertainties about universe were enlightened only then. A. Hardly had Yuri Gagarin made a successful space flight in 1961, human'
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Yuri Gagarin made a successful space flight in 1961. Human's uncertainties about universe were enlightened only then.
Hardly had Yuri Gagarin made a successful space flight in 1961, human's uncertainties about universe were enlightened.
Without human's uncertainties about universe, Yuri Gagarin wouldn't have made a successful space flight in 1961.
Not until human's uncertainties about universe were enlightened did Yuri Gagarin make a successful space flight in 1961.
Only after Yuri Gagarin had made a successful space flight in 1961 were human's uncertainties about universe enlightened.