15) SEP Construct Explanations The early universe was dark during two time periods,
which included most of the first 300 million years. Explain the differences between
these time periods that resulted in darkness.



Answer :

Final answer:

The early universe experienced darkness in two distinct time periods due to different factors, such as the lack of hydrogen atom formation and the absence of stars and galaxies.


Explanation:

The early universe was dark during two time periods which included most of the first 300 million years.

The first period was in the initial stages of the universe when it was extremely hot and dense, with quantum effects of gravity dominating interactions and no formation of hydrogen atoms, making it dark.

The second period was after the formation of hydrogen atoms, with the absence of stars or galaxies, keeping the universe in darkness until the formation of galaxies hundreds of millions of years later.


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