Back (crater)
Back is a small Lunar craters, lunar impact crater that is located near the eastern limb of the Moon. It lies on the northwest edge of the Mare Smythii, and the northeast rim is adjacent to the crater Schubert (lunar crater), Schubert. To the west is Jenkins (crater), Jenkins, and to the southwest is the Weierstrass (crater), Weierstrass–Van Vleck (crater), Van Vleck crater pair. Back is nearly circular, with narrow, sharp-edged outer walls that are not significantly worn. Despite its relatively small size, Back has a central peak typical of larger craters. Back was formally named by the International Astronomical Union, IAU in 1976.Back
Gazetteer of Planetary Nomenclature International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN) It was previously known as Schubert B.

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Apollo 16
Apollo 16 (April 1627, 1972) was the tenth crewed mission in the United States Apollo space program, administered by NASA, and the fifth and penultimate to land on the Moon. It was the second of Apollo's " J missions", with an extended stay on the lunar surface, a focus on science, and the use of the Lunar Roving Vehicle (LRV). The landing and exploration were in the Descartes Highlands, a site chosen because some scientists expected it to be an area formed by volcanic action, though this proved to not be the case. The mission was crewed by Commander John Young, Lunar Module Pilot Charles Duke and Command Module Pilot Ken Mattingly. Launched from the Kennedy Space Center in Florida on April 16, 1972, Apollo 16 experienced a number of minor glitches en route to the Moon. These culminated with a problem with the spaceship's main engine that resulted in a six-hour delay in the Moon landing as NASA managers contemplated having the astronauts abort the mission and return to E ...
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