the quasar HS 1946+7658 has a redshift z=3.02. at the time when the light we see...
the quasar HS 1946+7658 has a redshift z=3.02. at the time when the light we see from HHS 1946+7658 left the quasar, how many times more dense was the matter in the universe than it is today?
Homework Answers
The scale factor at the time t, when the light left the quasar can be calculated from the red shift as
The density of matter at time t is given by
Here 
is the matter density today. So the matter was 64.93 times more
dense than today.
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