Just hit me now, and maybe I'm way past my bedtime, but I always thought the rotation creates the gravity on planets. But the moon does not spin/turn. So how does the astronauts stay on the moon (if they were ever there)?
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The moon rotates. It rotates at the same speed as it traverses along its orbit.
Gravity is caused by mass deforming space-time.
Read a science book. Please.
To be fair to OP, that is still theoretical science. Einstein never quite nailed down his theories on “why” gravity exists, but it does, and he nailed that down, and its measurable, testable, reproducible, and if you want to flex on gravity, gravity wins lol