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1. Minecraft version: 1.12.2
2. Galacticraft version: 4.0.2.281
3. GalaxySpace version: 2.0.15
4. AsmodeusCore version (for 2.0.1 version and above): 0.0.24
5. Side (Single player (SSP), Multiplayer (SMP), or SSP opened to LAN (LAN)): LAN
6. Other add-ons: NO

Description of the issue:
Tier 4 rocket need magnesium but, Magnesium can't get without
tier 4 rocket.

Screenshot/Video:

Attached log file (or url on pastebin.com):

You can reach Ganymede with a tier 3 rocket.
Overworld - Mars - Ceres - Ganymede