Multiple Choice
Scientists indicate that the first stars probably formed at a redshift z ~ 20.At that time the universe was about
A) 5 percent its current size.
B) 50 percent of Earth's size.
C) as big as an atom.
D) about 100 AU across.
E) the size of a grapefruit.
Correct Answer:
Verified
Correct Answer:
Verified
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