CAESAR is a sounding-rocket experiment carried out by students of hepia from HES-SO within the REXUS program. The team has launched on REXUS-14 a capillarity-based experiment to reliably confirm other ground-based experiments. The objective of this flight was to place several sponges in a microgravity environment and acquire images of the fluid distribution around them. The center element of the experiment, called a sponge, is a propellant management device (PMD) for space vehicles, often used in satellites. It is designed to work even if the vehicle undergoes small accelerations, for example during station-keeping maneuvers. This flight was the final step to have sufficient data to publish the results of all the researches the team achieved in the past few years. If the results are validated, the team will have a reliable ground based microgravity system to test PMDs.