Homework Question Set 7 -- Due Nov 13
1) Is the average density of the universe today greater, less, or the about
the same as it was 10 billion years ago?
2) Is the background temperature of the universe hotter, colder, or about
the same as it was 10 billion years ago?
3) Is the number of white dwarf stars in the universe greater, less, or about
the same as it was 10 billion years ago?
4) Are globular clusters brighter, fainter, or about the same brightness as
they were 10 billion years ago?
5) Is the Hubble Constant today higher, lower, or about the same as it was
10 billion years ago? (Ignore the effects of any Cosmological Constant.)