Is there a mod already created to have really big planets and stars?

I was looking around found someone asking how to make the planets larger on their own. It seems like the clouds can't be scaled up in a 3d application. I have 3 3d programs so using one isn't a problem, but i'd rather not waste my time if it isn't possible to make it look right.

Has anyone solved this issue or have any way to scale the planets up? If i could download someone elses mod it would save me a ton of time, which I have little of