What phenomenon provides proof of the Earth's orbital *velocity* rather than just its position change?

Answer

Aberration of starlight

Aberration of starlight results from the Earth moving through space, causing the light from distant stars to appear tilted toward the direction of orbital motion, thus confirming the speed of movement.

What phenomenon provides proof of the Earth's orbital *velocity* rather than just its position change?

#Videos

How We Figured Out That Earth Goes Around the Sun - YouTube

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