If We "Reverse" Hubble Expansion, We See That the Universe

question 4

Multiple Choice

If we "reverse" Hubble expansion, we see that the universe should have been very dense in the distant past, and so it must have been ________ than it is today, and we should be able to
Observe ________ as a result.

• A) much colder; cosmological redshift
• B) much colder; the cosmic microwave background
• C) much hotter; gravitational redshift
• D) much hotter; the cosmic microwave background
• E) much hotter; black holes