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Which mechanism causes gravitational time dilation in spacecraft?

A)Spacetime curvature altering clock rates
B)Doppler shift of reflected radio waves
C)Altered atomic vibration within materials
D)Increased internal energy affecting onboard clocks

💡 Explanation

Greater gravitational potential causes spacetime curvature, thereby increasing the observed time differences on the spacecraft clock relative to Earth because spacetime contraction shortens measured intervals rather than altering the internal physics of components.

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