Space Propulsion Market Size, Share & COVID-19 Impact Analysis, By Platform (Satellite (Small Satellite, Medium Satellite, and Large Satellite), Launch Vehicles, Rovers/Landers, Capsules/Cargo, and Interplanetary Spacecraft and Probes), By Propulsion Type (Chemical Propulsion, Electric Propulsion, Solar Propulsion, Nuclear Propulsion, and Others), By Component (Thrusters, Electric Propulsion Thrusters, Nozzles, Rocket Motors, and Others), By End-user (Commercial and Government & Defense), and Regional Forecast, 2021-2028