it is often stated that time travel is not forbidden by any law of physics.
but doesn’t the second law of thermodynamics forbid it because going back in time would involve a decrease in entropy?
so basically i think that there is no relationship between mass and temperature for non main sequence stars so this can't be done. cheers for your help anyways
i was wondering if there is a relationship between mass and temperature that would allow me to calculate the surface temperature of a blue super giant of 24 solar masses?
or do i simply need more information to do this