Seeking gravitational waves in space
2 December 2015 Last updated at 17:48 GMT
The most exquisite space physics experiment yet devised in Europe goes into orbit on Thursday.
Lisa Pathfinder will test technologies for a future mission to detect gravitational waves.
These are ripples in the fabric of space-time that are produced when black holes collide and stars explode.
Some of Lisa Pathfinder's instrumentation was produced at Glasgow University by Dr Harry Ward and his team.