(FILES) This handout file image taken on November 26, 2015 and obtained from the European Space Agency on November 29, 2015 shows an artists impression of the LISA Pathfinder, ESAs mission to test technology for future gravitational-wave observatories in space. The European Space Agency's LISA Pathfinder experiment was launched last December to set up an ambitious mission to observe gravitational waves from space. Europe will tackle the construction of its future space observatory, eLISA, and search for gravitional waves in the depths of the universe. / AFP PHOTO / ESA / HO / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / ESA" - NO MARKETING - NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS HO/AFP/Getty Images
