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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

Respuesta :

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Answer

this is what i found. it might be D

Explanation:

dunno if helps/

The Cosmic Microwave Background (CMB) are a type of electromagnetic radiation which were believed to be the remnant of thermal energy from the big bang. ... The radiation is known to be the remnant leftover of the big bang

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Answer:

D

Explanation:

several sites say background radiation

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