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Question
The discovery of the cosmic microwave background was important becauseA) it established a firm center of the universe.
B) it was experimental verification of a prediction from the Big Bang theory.
C) it proved that astronomy at radio wavelengths was possible.
D) its detection was a major advance in microwave testing.
E) it showed the universe must be closed, with more than the critical density here.
Answer
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Related questions
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