Astronomers can estimate the age of the universe by picking a blank at some Blank from the Blank .

Astronomers can estimate the age of the universe by picking a blank

 at some Blank

 from the Blank

. Since the distance to the galaxy is known and we can measure it’s Answer

 we can estimate the Answer

 they started moving apart. When astronomers apply this type of calculation to galaxies throughout the universe they see that the universe is approximately Blank

 years old. 

Note: Please copy in your answers from the Word Bank below.

Word Bank

1965 

14 billion 

Big Bang 

closer together 

Cosmic Microwave Background Explorer 

distanceexpanding universe 

finite time 

galaxy 

Georges Lemaitre 

Hubble’s Law 

Milky Way 

moves awayPrimeval Atom 

radiation 

redshift 

superdense state 

surface 

time 

velocity