1.8.1 - 1.12.5] Interstellar Fuel Switch (IFS) 3.29.5 - KSP1 Mod Releases - Kerbal Space Program Forums
Warpplugin/parts/Radiators/ActiveCoolingSystem/ActiveCoolingSystem/activeCoolingSystemv3 will not load past that. · Issue #672 · sswelm/KSP-Interstellar-Extended · GitHub
1.12.x] SimpleFuelSwitch v1.4.2: Toggle tanks' fuel type in the editor. Simple and lightweight. - KSP1 Mod Releases - Kerbal Space Program Forums
Kerbal Space Program - Interstellar Extended Tutorial - Episode 4 - Discovery Fusion Engine - YouTube
Kerbal Space Program - Interstellar Extended Tutorial - Episode 1 - Daedalus and Atmospheric Scoop! - YouTube
Next step in advancing space travel: Fission rockets