The Galactic Year Is the Time for Our Solar System

question 73

Multiple Choice

The Galactic Year is the time for our solar system to orbit the Galaxy; it is about:

• A)15 million years.
• B)225 million years.
• C)4.5 billion years.
• D)9.6 billion years.
• E)13.5 billion years.

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Compensating Differentials

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