-roup of answer choices had a much higher temperature in the past. appears essentially the same in all directions (it is isotrop has a temperature of about 3 degrees K above absolute is the result of a mixture of radiation from many indepen nd galaxies that formed within the first billion years of the was discovered by Penzias and Wilson in the mid-1960s.
-roup of answer choices had a much higher temperature in the past. appears essentially the same in all directions (it is isotrop has a temperature of about 3 degrees K above absolute is the result of a mixture of radiation from many indepen nd galaxies that formed within the first billion years of the was discovered by Penzias and Wilson in the mid-1960s.
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Transcribed Image Text:Which of the following statements about the cosmic background radiation is not true?
Group of answer choices
It had a much higher temperature in the past.
It appears essentially the same in all directions (it is isotropic).
It has a temperature of about 3 degrees Kabove absolute zero.
It is the result of a mixture of radiation from many independent sources, such as stars
and galaxies that formed within the first billion years of the Big Bang.
It was discovered by Penzias and Wilson in the mid-196Os.
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