TOPSHOT - This handout picture released on September 16, 2016 by the European Space Agency shows a computer generated image of a multi-dome lunar base being constructed, based on the 3D printing concept. Once assembled, the inflated domes are covered with a layer of 3D-printed lunar regolith by robots to help protect the occupants against space radiation and micrometeoroids. / AFP PHOTO / EUROPEAN SPACE AGENCY (ESA) / HO / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / ESA/Foster + Partners" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS HO/AFP/Getty Images
