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What units are used when describing the length of time that the universe has been expanding? billions of years millions of years light years light year kilometers decades
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What units are used when describing the length of time that the universe has been expanding?

billions of years
millions of years
light years
light year kilometers
decades

User Jacob Zwiers
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2 Answers

5 votes

Answer:

Light years

Step-by-step explanation:

User Dstreit
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2 votes

Answer:

light years

Step-by-step explanation:

User Alderath
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3.5k points
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