Which of the Following Is an Example of Time Dilation

question 65

Multiple Choice

Which of the following is an example of time dilation?

• A)As material approaches a black hole event horizon, it appears redder and redder.
• B)The time that a star spends as a giant is much shorter than its main-sequence lifetime.
• C)Pulsars' pulsation periods slow down as they age.
• D)As a star approaches a black hole's event horizon, it appears to move more and more slowly.

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