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The Earth's shadow on the moon during a lunar eclipse. It's always round -- no matter the time of day, etc. -- which is only possible if the earth is a sphere.
by dwaltrip 5y ago
The Earth's shadow on the moon during a lunar eclipse. It's always round -- no matter the time of day, etc. -- which is only possible if the earth is a sphere.
- syntheticcdo 5y agoThis assumes lunar eclipses are caused by the Earth's shadow.