Table of Contents: Ch. 1 Introduction Ch. 2 Solid Rocket Motors Ch. 3 Cryogenic Engines Ch. 4 LOX/HC Engines for Boosters and Upper Stages Ch. 5 LOX/HC Engines in Russia Ch. 6 Green Propellants Ch. 7 Green Propellants in Russia Ch. 8 Miniaturized Propulsion Ch. 9 Solar Thermal Upper Stage Ch. 10 Electric Propulsion Systems Ch. 11 Superconductivity Ch. 12 Rubbia's Engine Ch. 13 VASIMR Ch. 14 Laser Propulsion Ch. 15 Electromagnetic Railguns Ch. 16 Solar Sails Ch. 17 In-Situ Resource Utilization