520 620 applied artificialsatellitesinremotesensing astronauticalinstruments astronautics astronauts astronomy astrophysics astrophysicsandastroparticles astrophysicsandcosmology atmospheres automotiveengineering businessplanning complexity computerapplications computerscience designandconstruction earthsciences economicaspects engineering engineeringdesign extraterrestrialphysics geography history historyofscience industrial innovation/technologymanagement interplanetaryvoyages lifesciences mathematics measurementscienceandinstrumentation medicalandradiationphysics observationsandtechniques organisationalandeconomicpsychology organization/planning physics planetarymeteorology planetaryscience planetology planets popularscienceinastronomy popularscienceinmathematics/computerscience/naturalscience/technology popularscienceinnatureandenvironment psychology qb1-991 qb460-466 qb980-991 remotesensing remotesensing/photogrammetry science spaceflights spacesciences spacevehicles