Astronomy: The Universe Unit Test

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Question
Which evidence supports the idea that Cosmic Microwave Background radiation is a remnant of the Big Bang?(1 point)
Responses

Its temperature fluctuates greatly.
Its temperature fluctuates greatly.

Its temperature is uniform.
Its temperature is uniform.

Its mass is uniform.
Its mass is uniform.

Its mass fluctuates greatly.

1 answer

The evidence that supports the idea that Cosmic Microwave Background (CMB) radiation is a remnant of the Big Bang is:

Its temperature is uniform.

The uniformity of the CMB across the sky is a strong indication that it is a relic from the early universe, consistent with predictions made by the Big Bang theory.