The Moon is the only natural satellite of the Earth and the fifth largest moon in the Solar System. The Moon is in synchronous rotation with Earth, always showing the same face with its near side marked by dark volcanic maria that fill between the bright ancient crustal highlands and the prominent impact craters. It is the brightest object in the sky after the Sun, although its surface is actually dark, with a reflectance just slightly higher than that of worn asphalt. Its prominence in the sky and its regular cycle of phases have, since ancient times, made the Moon an important cultural influence on language, calendars, art and mythology. The Moon's gravitational influence produces the ocean tides and the minute lengthening of the day. Dr. Eugene Shoemaker, Full moon, magnetic field, Neil Armstrong, Apollo 8, Apollo 11, luna, NASA, craters, astronomy, astrology, quantum, space

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