GK
BIG BANG THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The temperature of the CMBR today is approximately ____
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3000K
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3K
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10^10K
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10^28K
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Explanation:
Detailed explanation-1: -3K Background Radiation Currently it is commonly called the Cosmic Microwave Background or just CMB, alluding to its Wien peak in the microwave region. It shows the wavelength dependence of a “blackbody” radiator at about 3 Kelvins temperature.
Detailed explanation-2: -Planck’s predecessors (NASA’s COBE and WMAP missions) measured the temperature of the CMB to be 2.726 Kelvin (approximately-270 degrees Celsius) almost everywhere on the sky.
Detailed explanation-3: -The CMB has a thermal black body spectrum at a temperature of 2.72548±0.00057 K.
There is 1 question to complete.