How Do We Know What Goes on Under the Surface

question 21

Multiple Choice

How do we know what goes on under the surface of the Sun?

• A)We have X-ray images from satellites of the interior of the Sun.
• B)Astronomers create mathematical models that use the laws of physics,the Sun's observed composition and mass,and computers to predict internal conditions.
• C)We have sent probes below the surface of the Sun.
• D)By measuring Doppler shifts,we observe vibrations of the Sun's surface that are created deep within the Sun.
• E)both B and D

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