Which is one piece of information that astronomers use to calculate the age of the universe? A: dark energy
B: the age of rocks on Earth
C: the current motion of inner planets
D: patterns of background radiation

The age of the universe can be calculated with the Patterns of background radiation.

Patterns of background radiation is the information that helps the astronomers in order to calculate the age of the universe. Astronomers estimate the age of the universe in many ways i.e.

Patterns of background radiation, looking for the oldest stars and measuring the rate of expansion of the universe. Patterns of background radiation helps to calculate the age of the universe so we can say that patterns of background radiation is used by the astronomers to calculate the age of universe.

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One piece of information from the options listed that can be used to calculate the age of the universe is : Patterns of background radiation( D )

some of the ways astronomers can use to determine the age of the universe or the age of any planet is by studying the oldest piece found in the universe or planet. like studying the oldest stars.

The universe is believed to have been formed from the Big Bang as explained in the Big bang theory therefore looking for patterns of background radiation from naturally occurring radioactive materials is one piece of information that astronomer needs to determine the age of the universe.  while

The age of rocks on earth can only be used to determine the age of the earth and not the universe.

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