Why did early astronomers conclude that Earth had to be motionless?
Answer:
The classical astronomers concluded that Earth had to be motionless because parallax was not detected and no motion was felt. If Earth moved, they reasoned, the vibrations generally associated with motion should be felt. Additionally, if Earth orbited the sun, then nearby stars should show parallax.
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What will be an ideal response?
Lift an object against the force of gravity if you want to judge its
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