In this undated handout photo provided by the European Space Agency an artist's impression shows the LISA Pathfinder orbiting over the Earth ESA...
{"Image ImageDescription": "KOUROU, FRENCH GUIANA - DECEMBER 03:  In this undated handout photo provided by the European Space Agency an artist's impression shows the LISA Pathfinder orbiting over the Earth. ESA launched the LISA pathfinder on December 3, 2015 from its space station in French Guiana. The LISA Pathfinder is a probe that will test technologies required for the gravitational wave observatory, which is another probe scheduled for launch in 2034.  (Photo by ESA via Getty Images)", "Image Copyright": "2015 Euopean Space Agency"}