atrex acceleration aerobraking aerocapture air-augmented rocket air launch airbag alcubierre drive antimatter catalyzed nuclear pulse propulsion antimatter rocket apollo program arcjet rocket astronaut astronomical unit astronomy atmospheric reentry beam-powered propulsion bipropellant rocket bussard ramjet china national space administration coilgun colloid thruster conservation law de laval nozzle delta-v digital object identifier direct ascent dual mode propulsion rocket earth earth observation satellite electric propulsion electricity generation electrodeless plasma thruster electromagnetism electrostatic ion thruster emdrive engine escape velocity european space agency expendable launch system extra-vehicular activity field emission electric propulsion fission-fragment rocket fission sail fluid dynamics force fusion rocket gas core reactor rocket geocentric orbit geosynchronous orbit gravitational acceleration gravity drag hall effect thruster heat heim theory helicon double layer thruster history of spaceflight hohmann transfer orbit human spaceflight hybrid rocket hyperspace impulse intergalactic travel internal combustion engine international space station interplanetary spaceflight interstellar travel ion ion thruster jet engine lagrangian point laser propulsion launch loop launch pad launch vehicle life support system lightcraft linear liquid air cycle engine liquid rocket list of aerospace engineering topics lithobraking low earth orbit magellan probe magnetic field magnetic field oscillating amplified thruster magnetic sail magnetoplasmadynamic thruster mars global surveyor mars reconnaissance orbiter mass driver mass ratio mir momentum monopropellant rocket multistage rocket nasa non-rocket spacelaunch nozzle nuclear electric rocket nuclear fusion nuclear photonic rocket nuclear pulse propulsion nuclear salt-water rocket nuclear thermal rocket orbit orbital maneuver orbital mechanics orbital ring orbital spaceflight orbital station-keeping parachute photovoltaic module plasma private spaceflight project daedalus project gemini project harp project mercury propulsive efficiency prose pulse detonation engine pulsed inductive thruster pulsed plasma thruster radiation pressure radioisotope rocket railgun ram accelerator reaction engine reactionless drive resistojet rocket reusable launch system robotic spacecraft rocket rocket engine rocket engine nozzle rocket engine test facility rocket launch rocket launch site russian federal space agency satellite scaled composites white knight scramjet self-replicating spacecraft shenzhou program skip reentry solar energy solar sail solar thermal rocket solar wind spacex space race space shuttle space shuttle main engine space accidents and incidents space adaptation syndrome space and survival space colonization space elevator space exploration space fountain space gun space launch space tourism space weather spacecraft spaceflight spaceport specific impulse spy satellite sub-orbital spaceflight sun tether propulsion thrust tripropellant rocket tsiolkovsky rocket equation warp drive weather satellite weightlessness wormhole