How do we know the mass of a planet originally appeared on Quora - the knowledge sharing network where compelling questions are answered by people with unique insights. Answer by Geoffrey Widdison on ...
Astronomy on MSN
How is the total mass of the universe calculated?
Astronomers use many methods to determine this number, including gravitational lensing, the universe’s expansion rate, and more.
Results that may be inaccessible to you are currently showing.
Hide inaccessible results
Feedback