Mod and its expansion for Minecraft 1.12.2. You need:
Minecraft 1.12.2
Forge 14.23.1.255 or higher.
Galacticraft 4 version 4.0.1.150 (or any compatible with 1.12.2)
Extraplanets 0.2.8 (or any compatible with 1.12.2)

Music:
"Best Music For Gaming Channels + Videos [Copyright Free]" by:
Paul Atrocity - We Going On