That's called the "Cosmic Microwave Background". (CMB)
It was discovered in 1965, and its discoverers were awarded
the Nobel Prize in Physics in 1978.
The term temperature has to do with the measure of an object's "hotness".
<h3>What is temperature?</h3>
The term temperature has to do with how hot or cold a body is. In other words, the word temperature brings us to call to mind the degree of hotness or coldness of a body.
Succinctly put, the term temperature has to do with the measure of an object's "hotness".
Learn more about temperature:brainly.com/question/7510619
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The answer is 1.33 i hope this helps you