Recent content by brainfuel

By thicker do you mean "of greater height" (from troposphere to exosphere) or "more dense/viscous"? In either case, surface pressure would be greater, right?

For a given mass, as radius decreases, would atmospheric pressure increase, since surface gravity would increase? I'm assuming that atmospheric composition doesn't change. For a planet with radius = 1.1*Earth and mass = 1.3*Earth and atmospheric molar weight within 1% of Earth's, does a...

Okay, that makes sense, and seems to work out to the same result I'd found before. Now I just have to find out if that's a plausible number for the planet in question, which has radius r = 7080 km (1.11 x Earth) and mass m = 7.766 e24 kg (1.3 x Earth). Who knows, I may end up doing all the math...

I've given a composition fairly similar to Earth's - the primary difference is the Nitrogen-Oxygen ratio (instead of 78:21, I made it 69:27, & threw in a couple percent Ne to balance it out). I think I've got it sorted - so I'll dump the math here & see if it seems legit. molar mass (M) =...

If it helps - I've given the atmosphere a composition with a molar mass of 0.02913351 kg/mol. I considered the barometric formula to solve this, but I don't have Pb, Tb, or Lb.

I'm working on building a world, and I have established the mass and radius of the planet, as well as its distance from its star and mean surface temp. I have determined g (10.33 m/s^2) at sea level, and wonder if this plus the mean surface temp is enough to get a rough idea of the...