The moon and the earth rotate synchronously, so people on Earth can only see the same side of the moon throughout their lives. Because the moon also rotates, people on Earth cannot see the other side (see Figure L1a). There are also days when the moon faces away from the sun. It was pitch black at this time. Even if the International Space Station orbited the moon, it was pitch dark for part of the time because it faced away from the sun.

The gravitational force of two large masses is equal to the centripetal force required for small objects to move accordingly. Therefore, the moon falls at the Lagrangian point between the sun and the earth (L1, L1a & L3). NASA announce (James Webb) The Abel Space Telescope is also a Lagrangian point. (See attached picture L1, L2 & L3). I wonder if there is a chance to see the other side of the moon?


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