According to Levee in this thread:
http://theflatearthsociety.net/talk/viewtopic.php?f=7&t=553#p24706
The atmospheric pressure of the sun, instead of being 27.47 times greater than the atmospheric pressure of the earth (as expected because of the gravitational pull of the large solar mass), is much smaller: the pressure there varies according to the layers of the atmosphere from one-tenth to one-thousandth of the barometric pressure on the earth;(13) at the base of the reversing layer the pressure is 0.005 of the atmospheric pressure at sea level on the earth;(14) in the sunspots, the pressure drops to one ten-thousandth of the pressure on the earth.
Hey levee... How do you or anyone else know the pressure of the sun? Have you stood on it's surface and measured it with a barometer?
his theory is juvenile. without much gas around it, there is no pressure. the earth has nitrogen, CO2, Oxygen, and other things to work with. the Sun is just around hydrogen, which it burns as fuel. Granted the sun does have an atmosphere, but it is predictably small. notice how venus has hell of an atmosphere, and yet is smaller.