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Inflation and Early-Universe Problems
Grade Level
Astronomy
AST.253 Inflation and Early-Universe Problems
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Which statement is the most scientifically careful way to describe inflation in high school astronomy?
A
Inflation is a photograph of the universe taken before the Big Bang.
B
Inflation is only another name for the expansion of Earth's atmosphere.
C
Inflation is a proven story that answers every question about the universe.
D
Inflation is a model that helps explain several early-universe puzzles and is tested against observations.
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