Textbook ExpertVerified Tutor
5 Dec 2021
Given information
Our universe is spherical in shape,
it has been expanding at the speed of light since the Big
Bang, and its density is the critical density.
Step-by-step explanation
Step 1.
We know that radius of universe is given as product of speed of light and age of universe
Volume is given by
Therefore mass of universe is
Substitute the volume in equation of mass
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