What was discovered in 1965 and is believed to be leftover thermal energy from the Big Bang?

A. Red shift
B. The Eagle Nebula
C. The Doppler effect
D. Background radiation



Answer :

Final answer:

Background radiation discovered in 1965 is believed to be leftover thermal energy from the big bang, supporting the Big Bang theory.


Explanation:

Background radiation discovered in 1965 is believed to be leftover thermal energy from the big bang. It is a crucial piece of evidence supporting the Big Bang theory, indicating the universe's early hot state.


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