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Lunar Reconnaissance Orbiter Spy Movement near the South Pole of the Moon



At the north and south poles of the moon, the height of the sun will never be higher or lower than 1.5° above the horizon. The daylight and shadow patterns produced are different from the moon or any other location on the earth. After zooming in on a small area of ​​lunar highlands near the South Pole, this visualization recreated the lighting conditions there within two lunar days (equivalent to two months on Earth).

Near the pole, the sun will not rise and set. Instead, when the moon rotates around its axis, the sun passes over the horizon and rotates a full 360 degrees around the terrain. Mountains as far away as 75 miles (1

20 kilometers) cast shadows on the entire landscape. Because the sun is at such a low angle, it can never reach the bottom of some deep craters. The places where the sun can never reach are called permanent shadow areas. They are the locations of some of the coldest spots in the solar system, so they capture volatile chemicals, including water ice, which will immediately sublimate (directly change from solid to gas) in harsh, airless sunlight. Landed on most other places on the moon.

The sun also seems to move in a circular motion at the poles of the earth, but it can also travel within a certain range. For example, from the vernal equinox to the summer solstice, the sun climbs higher in the sky, reaching a height of 23.4°. It only hugged around the equinox for a few days.At the poles of the moon, the sun is always Close to the horizon, and the shadow is always long, sweeping across the entire surface with the change in the azimuth of the sun.




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