Luna 20 was a successful automated sample return. Luna 20 was launched on 14 February 1972 and successfully landed in the rugged lunar highlands between Mare Fecunditatis and Mare Crisium on 21 February 1972. After collecting 55 g of lunar regolith, the Luna 20 ascent stage launched on 22 February 1973 and successfully landed back on Earth on 25 February 1972.
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