How to calculate the time duration for the formation of a galaxy. Cosmic physics.

This special video shows you how to derive the equation for the gravitational contraction and how to find out the time duration for the formation of a galaxy. A new set of cosmic calculations for the first time on youtube. Open for discussions.

[@asankasampath6]

most of the stars in our galaxy consist with binary stars why is that

[@tharanga.ek1986]

Most of, but not always, yet it is not a compulsory

[@tharanga.ek1986]

But binary bihaviour gives them an extra stability. So that they have a reason to survive more