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Hunting Ripples in the Fabric of Space-Time - The Trials and Tribulations of LISA - NaturPhilosophie
The LISA Pathfinder satellite was launched in December 2015. It features a single instrument, designed to measure and maintain a 38 centimetres separation between two small gold-platinum blocks. These "test masses" were released once the satellite reached its orbit, and were allowed to go into free-fall inside the spacecraft. The results of this space metrology experiment have now been published in a paper in the journal Physical Review Letters.