Soviet Luna 16 descent stage -- the first successful robotic lunar sample return spacecraft (NASA/GSFC/Arizona State University).
Luna 16 was the first robotic mission to land on the Moon and return a sample to the Earth. It was launched by the Soviet Union on 12 September 1970; landed on the Moon on 20 September; lifted off on 21 September and returned to the Earth on 24 September. The lunar landing occurred on the basaltic plains of Mare Fecunditatis; about 101 grams (3.5 ounces) of lunar material were returned. Sampling operations were conducted entirely in the dark since the Sun had already set when Luna 16 touched