How can astronomers infer approximately how long the universe has been expanding? Astronomers can look at the red shift of the galaxies to determine the rate at which they are expanding. They use this information to work backward to determine the age of the universe.
Astronomers can look at the red shift of the galaxies to determine the rate at which they are expanding. They use this information to work backward to determine the age of the universe.
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Answer:
How can astronomers infer approximately how long the universe has been expanding? Astronomers can look at the red shift of the galaxies to determine the rate at which they are expanding. They use this information to work backward to determine the age of the universe.
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Answer:
Astronomers can look at the red shift of the galaxies to determine the rate at which they are expanding. They use this information to work backward to determine the age of the universe.