# Steady state of the Galaxy

1. ### mmtwwla

1
How can we make the assumption that the Galaxy is approximately in a steady state at the present time?
I read this from the textbook:
"the time required to complete one orbit at 10kpc is 3×108yr... a typical disk star has completed over thirty revolutions, and hence it is reasonable to assume that the Galaxy is approximately in a steady state at the present time."

2. ### phinds

9,053
So, do you think that on the 31st revolution things are going to go crazy?