Which does the shift of the hydrogen absorption spectrum of a galaxy provide evidence for? Select the three correct answers.(2 points)
Responses
motion of the galaxy
motion of the galaxy
number of stars in the galaxy
number of stars in the galaxy
expansion of the unverse
expansion of the unverse
The Big Bang Theory
The Big Bang Theory
composition of the universe
composition of the universe
temperature of the galaxy
1 answer
motion of the galaxy, expansion of the universe, and composition of the universe