This little mod adds reactors and propulsion systems based on nuclear fusion or antimatter. It is the Beta version of "Utech Nuclear Science Ink", you can find previous versions here : https://spacedock.info/mod/2371/UTech%20Nuclear%20Science%20Ink.?ga=%3CGame+3102+%27Kerbal+Space+Program%27%3E

Installation : Simply drop the UTek NTS folder (not the zip) in your GameData folder in the KSP files. This mod should be compatible with every versions of ksp.

Content :

-8 new engines (2 VASIMR, 4 fusion engines, 1 antimatter beamed engine and 1 electric thermojet)

-4 nuclear reactors (deuterium-tritium, deuterium-helium3, hydrogen-lithium7, hydrogen-boron11 fusion and an antimatter reactor)

-9 new resources (Helium, Hydrogen, Deuterium, Tritum, Helium3, Boron, Lithium, Compressed Air,Anti-Hydrogen)

-4 tank sizes for each resources

-Air compressors

The models and textures aren't great but I hope you'll still have fun with that !