- #1
mmtwwla
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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."
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."