How is the Moon 1% of Earth’s mass, but its gravity is 17% of Earth’s?
The Moon’s gravity surprisingly exerts about 17% of Earth’s gravity despite its mass being only 1% of Earth’s. This discrepancy stems from the universal law of gravitation, which shows that gravity depends on both mass and distance. Since the Moon is much closer to Earth than most other celestial bodies, its gravitational pull is stronger relative to its size. This phenomenon is crucial for understanding tidal forces and the dynamic relationship between Earth and its satellite, affecting everything from ocean tides to Earth’s rotational speed.
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