Is 3.980 leap years as long as The First spaceflight (Sputnik)?
It's about sixteen times as long as The First spaceflight (Sputnik)
The length of The First spaceflight (Sputnik) is about 0.250 leap years.
(a.k.a. Sputnik 1, a.k.a. Спутник-1, a.k.a. "Satellite-1", a.k.a. Простейший Спутник-1) (1957) (total time in orbit)
Launched from Kazakhstan in 1957, Sputnik was the first artificial satellite placed into orbit around Earth, where it remained for 0.250 leap years. During its voyage, it traveled about 70,000,000 km (43,495,983.46 mi), completing an orbit of the planet every 0.00018 leap years.
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