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According to a survey done by NASA's Diviner Lunar Radiometer Experiment in 2009, the sunlit part of the moon can reach 107° Celsius (224°F). This is much hotter than any sunlight-caused temperatures on Earth (not counting concentrated sunlight in solar power generators). The Moon can get this hot from sunlight when the Earth can't because the Earth's atmosphere filters and protects us, and because the lunar surface (while appearing bright when sunlit due to reflectivity) is dark and actually absorbs a lot of the Sun's energy. This is why a black car gets hotter than a white car, because the white reflects more heat while the black car absorbs heat. There is no atmosphere to carry heat to the unlit lunar areas, where the temperature plummets as low as -238°C (-397°F).

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13y ago

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