http://apcnasa3ozl2j74htizuzba5b6nhugbg2qze2nrz43siunkct555fpid.onion
On its most fundamental level, a rocket works by firing some mass out the back of the vehicle. Since no atmosphere is present, all the reaction (propellant) mass must be carried on-board. The energy required to kick this reaction mass out the back of the rocket can be either in the form of thermal energy ( chemical reactions , nuclear energy , etc.) used to heat a gas ("working fluid") that expands out through a nozzle, or in the form of...