California Lunar Sample Displays
The California lunar displays are two commemorative plaques consisting of small fragments of Moon specimen brought back with the Apollo 11 and Apollo 17 lunar missions and given in the 1970s to the people of the state of California by United States President Richard Nixon as goodwill gifts. Description Apollo 11 Apollo 17 History The California Apollo 17 lunar sample display burned in a 1978 fire at the San Diego Aero-Space Museum. The damaged plaque is stored at the San Diego Air & Space Museum. According to Moon rocks researcher Robert Pearlman, the California Apollo 11 display is also housed in the San Diego Air & Space Museum. See also * List of Apollo lunar sample displays This is a list of lunar sample displays from the Apollo program that were distributed through the United States and around the world. They include samples from the Apollo 11 and Apollo 17 missions conducted by NASA in 1969 and 1972. The Apollo 1 ... References Further readi ...
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Moon 4
The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of Australia). The Moon is a planetary-mass object with a differentiated rocky body, making it a satellite planet under the geophysical definitions of the term and larger than all known dwarf planets of the Solar System. It lacks any significant atmosphere, hydrosphere, or magnetic field. Its surface gravity is about one-sixth of Earth's at , with Jupiter's moon Io being the only satellite in the Solar System known to have a higher surface gravity and density. The Moon orbits Earth at an average distance of , or about 30 times Earth's diameter. Its gravitational influence is the main driver of Earth's tides and very slowly lengthens Earth's day. The Moon's orbit around Earth has a sidereal period of 27.3 days. During each synodic p ...
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