Answer:
D. The theory is based on the idea that an explosion did not occur; therefore, evidence of radiation would not be predicted in the theory.
Explanation:
You want to identify the statement that best describes why the steady state theory cannot explain the radiation detected in space.
Radiation
The Big Bang theory explains the cosmic background radiation as remanent thermal energy from the explosion creating the known universe. The Steady State theory presumes there was no explosion. It offers no alternative explanation for the observed cosmic background radiation.
The cosmic background radiation was first observed in 1965 by two radio astronomers who set out to map radio signals from the Milky Way. They found microwave signals that could not be attributed to a specific source, and were of the same intensity in every direction at every time of day or season of the year. The spectrum of this radiation is consistent with a source temperature of about 2.725 K, explained as the cooled remains of the hot plasma that once filled the universe.
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