The GATEWAY (formerly the Deep Space Gateway)

                                                                                                           The  GATEWAY is supported by the Multilateral
                                                                                                          Coordination Board  (MCB).  It has its roots in the
                                                                                                          Cis-lunar base envisioned back in the 2010's. The
                                                                                                          GATEWAY is currently intended to support lunar
                                                                                                          operations and be a stepping stone to Mars .
  
                                                                                                           The first two modules of the GATEWAY are currently 
                                                                                                          scheduled for launch by a Falcon Heavy no earlier 
                                                                                                          than November 2024. They are the Power and 
                                                                                                          Propulsion Element (PPE) and the Habitation and 
                                                                                                          Logistics Outpost (HALO).  
                                                                                                                                                                                                                    

                                                                                                          Historical information on GATEWAY from
                                                                                                          RUSSIANSPACEWEB .

                                                                                                          NASA  ESA

March 30, 2012 - NASASPACEFLIGHT published "Deep Space Habitat module concepts outlined for BEO (Beyond Earth Orbit) exploration".  When you consider the hab would require "life-support systems, sleep stations, exercise machines, science lab space and robotitic workstations" habitat space starts to shrink for a 4-astronaut 500-day configuration.

March 27, 2018 - NASA released the "Future Human Exploration Planning: Lunar Orbital Platform-Gateway and Science
Workshop Findings".

May 2, 2018 - NASA published the page "NASA's Lunar Outpost will Extend Human Presence in Deep Space"

September 8, 2018 - SPACE.COM published "Take a Look Inside Lockheed Martin's proposed Lunar "Gateway" Habitat for Astronauts". The habitat is reportedly 15' wide and nearly 22' long with astronauts occupying space for up to 90 days.

September 11, 2018 - NASASPACEFLIGHT published "NASA Updates Lunar Gateway Plans".

December 7, 2018 NASA published "Status of Gateway Power and Propulsion Element (PPE).

May 11, 2019 - NASASPACEFLIGHT published "Northrop Grumman, NASA test Cygnus-derived lunar gateway habitat"

The first element of the GATEWAY to be launched is the Power and Propulsion Element (PPE). It's intended to be a
50-kilowatt solar electric propulsion spacecraft.  May 23, 2019 NASA awarded Maxar Technologies to develop and demonstrate
 power, propulsion and communications capabilities for NASAs's lunar GATEWAY. The proposal was changed to providing 60KW power.

                               2018 Global Exploration Roadmay     Global Exploration Roadmap 2022

Photograph courtesy of NASA (Click on the image)

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