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Problem: Which of the following statements about the cosmic background radiation is not true?A) It has a temperature of about 3 degrees K above absolute zero.B) It is the result of a mixture of radiation from many independent sources, such as stars and galaxies.C) It had a much higher temperature in the past.D) It was discovered by Penzias and Wilson in the early 1960s.E) It appears essentially the same in all directions (it is isotropic).

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This problem requires us identify the false statement about cosmic background radiation.

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Problem Details

Which of the following statements about the cosmic background radiation is not true?

A) It has a temperature of about 3 degrees K above absolute zero.

B) It is the result of a mixture of radiation from many independent sources, such as stars and galaxies.

C) It had a much higher temperature in the past.

D) It was discovered by Penzias and Wilson in the early 1960s.

E) It appears essentially the same in all directions (it is isotropic).

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