The Laser Interferometer Space Antenna is a European Space Agency mission designed to detect and measure gravitational waves from space. It consists of three spacecraft flying in a triangular formation separated by millions of kilometers. They use lasers to measure minute changes in the distance between them caused by passing gravitational ripples from massive cosmic events.
Heard on the job
The pathfinder mission proved that the free-falling test masses required for LISA could be isolated from solar wind disturbances.