Space science, or the space sciences, are fields of science that are concerned with the study or utilization of outer space. There are several major fields of space science:
- Astronomy and Astrophysics
- Exobiology
- Microgravity environment
- Plasma physics
- Planetary science (considered a subfield of both Astronomy and Geophysics)
- Space transport
- Rocket
- Spacecraft propulsion
- Rocket launch technology
- Interplanetary travel
- Interstellar travel
- Astrodynamics
- Space exploration
- Unmanned space missions
- Manned space missions
- Space colonization
- Space physics
In addition, space sciences impact or are related to many other fields, from the biology of organisms in space environments to the geology of other bodies and planets (astrogeology), as well as nuclear physics in interstellar space and inside stars.