Astronautics
Astronautics is the science of spaceflight. It covers the fields of space travel and space exploration. It is divided into a number of subfields covering various aspects of spaceflight.
Astrodynamics
Spacecraft trajectories, ballistics and celestial mechanics.
Spacecraft Propulsion
Secondary propulsion
Spacecraft design
Structure
Power
Thermal design
Spacecraft controls
Attitude controls
Star trackers
telemetry, command and tracking
Space environment
Solar wind
Radiation
Bioastronautics
Aeronautics differs from astronautics in that it is the science of atmospheric flight. Aeronautics on Mars can be viewed either as a subset of spaceflight or as an extension of aeronautics.
