Question 1
Based on the observed red shifts in the spectral lines of distant galaxies, astronomers conclude that ________.
◦ the universe is in a steady state
◦ the universe is expanding
◦ the universe is contracting
◦ Earth is in the center of the universe
Question 2
Big Bang Theory suggests that prior to the Big Bang, the universe was ________.
◦ a giant neutron star
◦ nothing
◦ in a very hot and massive state
◦ a collapsed supernova