To remarkably reduce CO2 emissions after reaching the prime of space flight of zero CO2 emission, allowing 16 rounds thereby around the earth in one day, or the like, since existing aircrafts or the like receive very high air resistance during flight in the atmosphere, generating enormous CO2 emissions.

Atmospheric pressure same velocity-same volumetric power with mercury gravity turbine driving reaches mercury power or the like corresponding to around 23,000 times that of existing steam turbines, generating heat by compressing solar light heated air with a number of heat pumps and recovering heated compressed heat of the solar light heated air to output rotations of multiple turbines by divisionally conserving overheated steam hot heat generation and compressed air cooling heat generation, achieving jet propulsion using power around 23,000 times that of existing steam turbines, in a combined engine jet section (78A) and a solar heat gravity rotation aircraft (39B), and with the driving thereby, cost for arriving space by theoretical best rocket jet from around the highest flight altitude for existing aircrafts or the like is reduced to ≤1/100 thereof, achieving a rocket with solar system escape velocity, so that space flight with zero air resistance will reach the prime, and a one-day trip and space travel from any place on the earth will reach the prime.