It is ready to begin launch preparations in September at Europe's Spaceport in Kourou, French Guiana. It is at the IABG in Ottobrunn, near Munich (Germany) for the moment.
LISA Pathfinder will help to open up a completely new observational window into the gravitational Universe, proving new technologies needed to measure gravitational waves in space.
Predicted by Albert Einstein, these waves are ripples in the curvature of spacetime and are produced by massive celestial bodies.
Understanding their signature will tell scientists a lot about black holes, compact double stars and other exotic objects.