Planet Sizes - Make planet size slider apply to sky mode

[ShawnLaatsch]

Hoping you can make the planet size work in sky mode to show the way the solar system items appear to the naked eye/in planetarium view.

Example of having Venus appear as 3rd brightest object in the sky (brighter than Sirius, etc.), or having the Moon appear roughly 2.5 times actual size (so the eye percieves the phase).

Thanks for all you do. Feel free to contact me if you need more info.

[pkgw]

Thanks for reporting, Shawn!