LISA technology package (open)

A view of the LISA technology package that will go aboard the pathfinder mission (based on the July 2006 version of the design plans). The covers of the test mass containers and some structural elements have been removed. Visible to the left and to the right are the cube-shaped test masses within their containers; located between them is the interferometer (where the laser beams are shown as solid tubes). Image: EADS/Astrium

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