[Gemini Munar Satellite]

Way too many solar cells, way too many RTG's, and why would anyone take pictures in the dark and then post them?

Don't be mean, he can have as many parts as he like. As for the pics, gotta do what you gotta do.

I like the use of the no-mods fairings, creative way to create those.

[Moon lander]

There are a few apps on play stores (I have an Android phone) that are simple to use, but loaded with information. KSP Informer for example has a ton of planetary/moon information, including orbital and escape velocities!

KSP Orbit, and KSP Orbicalc are a few other good ones for transfer orbits to other planets/moons.