Dec 23 1960
From The Space Library
Goddard Space Flight Center scientists, Robert Jastrow and Robert Bryant, reported that atmospheric drag acting on ECHO I during the Severe solar storm of November 12, was increased by about a factor of two. Scientists had previously noted the rise and fall of the density of the upper atmosphere, and the heating effect of a solar flare had been noted on the orbit of SPUTNIK III in 1959.
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