#1 original report
When you change PLANET_SIZE_MEAN (in this case to 400.0) the atmosphere and the LOD (preview object of the planet when you are far away) don't resize correctly. (Screenshot attached)

Reproduce:

1. Increase PLANET_SIZE_MEAN to 400 in server.cfg
2. Go to a random planet and wait for the magic to happen.

#2
The LOD scales correctly now.

The atmosphere doesn't seem to fully work when you cross it (similar to what we used to have). The inner radius isn't the radius of the planet core, still seems to be a little bit smaller than the outer one. The outer radius appears to be correct for most planets although it's a bit too small for planets with radius 30-60

#3 micdoodle8
Atmosphere opacity changed, and made visible from all sides of a planet.
Increased outer radius size.
Switched atmosphere colors for earth-like and ice planets.

#4
There is no day/night cycle for atmosphere, the opacity of the shader is on all sides the same.

Noon => can't see stars
Night => almost no atmosphere effect, almost like you were in space.

#5 micdoodle8
Altered based on feedback, probably not done yet. This will need considerable work to implement some of the requested changes.

#6
the sky is only covered to about 25 % when viewed from surface.