Mars Analog Research Simulation M.A.R.S. UCLouvain is a scientific project simulating an expedition to Mars. This project is lead by students and researchers from the Université Catholique de Louvain (UCLouvain) and takes place during 2 weeks in the Utah desert. M.A.R.S. is an acronym for Mars Analog Research Simulation. In 2021, and for the ninth time, our project will fly out to Mars, simulating a scientific expedition to the Red Planet. We are sending 8 students and researchers at the Mars Desert Research Station (MDRS) in the Utah desert. During the mission in Utah, each member has a specific task related to the proper functioning of the MDRS : food production, tool maintenance, health care, communication, etc. More importantly, each member will conduct a scientific experiment to learn more about the extreme environment of Mars. An experiment that humans could replicate on the planet itself. These experiments have to be creative and feasible in a such extreme environment. M.A.R.S. UCLouvain (previously known as UCL to Mars) exists since 2010 and many Belgian and international companies have sponsored the design and the implementation of these experiments.