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Interesting fact of the day: despite the moon only being 1/4th the diameter of the earth it is a whole 1/80th the mass! But in terms of volume it is 1/50th the volume.

People don't realize how the relationship between diameter and volume is non linear. So it creates these very unexpected differences, especially at large scales.

Rob G.@design_RG@qoto.org@freemo That's indeed interesting. A quarter of the Earth's diameter, but the volume is so drastically smaller. Noticed from the numbers that you can also infer conclusions about the Moon's inner structure - a lower average density compared to Earth's. No heavy iron inner core there, like Earth's, which gives us residual heat, magnetic field and more.