Light gas gun simulated SMART-1 impact

The lunar impact of SMART-1 was simulated by experts at the University of Kent. For the test, they used using a high-speed, two-stage light gas gun (shown in this image) to shoot at 2 kilometres per second a 2-millimitre aluminium sphere that simulated the SMART-1 spacecraft. The target was a tray of sand, similar to lunar soil.