The Blue Painted Nebula skybox was originally created by StingrayProductions, he has allowed me to edit this skybox and upload it. What i have changed are the planets. Ive seen many people say they look too much like orbs, so i have replaced them with Neptune, Enceladus, and green Jupiter.

Link to the original pack, i also recommend checking out his other packs too! https://www.planetminecraft.com/texture_pack/blue-painted-nebula-custom-sky/