This modpack add many structures and biomes for exploration, but if you want to explore beyond the world, you can follow the detailed quest line which guides you to automating the required processes to get to space. Clever management of resources and space are essential to making an efficient factory.
This modpack was made for the twitch streamer "Space Cadet" and was made with Create: Above and Beyond by Simibubi as a base, though many mods have been added. Have fun!
All credit to the mod authors and most of all Simibubi for creating the original pack.