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LISA Pathfinder’s name, Laser Interferometer Space Antenna, clearly indicates the role of precursor that this mission plays. Its goal is to validate the technology required to detect gravitational waves from space. Gravitational waves will open a new door in our understanding of the Universe, and at the same time help to verify Einstein’s General Theory of Relativity. LISA Pathfinder will be launched early December 2015 on a Vega rocket from Kourou in French Guiana.