NASA Moving Ahead With Lunar Orbital Platform-Gateway Despite Questions

Planning For Lunar Orbital Platform-Gateway, NASA Requesting Industry Proposals For Power-Propulsion Element To Launch On Commercial Rocket By 2022; Orion To Rendezvous With PPE During Exploration Mission 3; EM-3 Will Also Bring European System Providing Refuelling, Infrastructure And Telecommunications (ESPRIT) Plus US-Built Habitation Module; Additional Modules To Be Brought On Exploration Missions 4 And 5; Critics Claim LOP-G Lacks Clear Mission Of Moon Or Mars

Credits: NASA