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In November 1969, humans walked on the Moon for the second time. Astronaut tracks are visible in between the Intrepid descent stage and Apollo Lunar Science Experiment Package (ALSEP) in this low-altitude image from the Lunar Reconnaissance Orbiter Camera.

Moon Phase and Libration, 2021

Every Moon phase in 2021.

This visualization shows the Moon's phase at hourly intervals throughout 2021, as viewed from the Northern hemisphere.
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