The four identical spacecraft that make up NASA's MMS mission are flying with a separation of just 4.5 miles.
GREENBELT, Md., Sept. 21 (UPI) -- Four identical spacecraft make up NASA's Magnetospheric Multiscale mission. Last week, the four craft convened in the closest-ever flying formation. The craft are flying with a separation of just 4.5 miles. The MMS spacecraft flew at a distance of six miles apart in...
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