Question

Which is one piece of information that astronomers use to calculate the age of the universe?

Answer 1

Answer:

• the age of the oldest stars
• patterns of background radiation
• how fast distant galaxies are moving away from us

Explanation:

According to the NASA, astronomers can estimate how old the universe is by comparing the age of the oldest stars and the rate of expansion of the universe. The rate of expansion of the universe is based on the Big Bang theory and it states that our universe is continuously expanding since it first developed. Astronomers measure Cosmic Microwave Background radiation resulting from the Big Bang.