This report presents the results of a front-end evaluation with Saint Louis Science Center visitors on the topics of Mars, Mars exploration, engineering, and robotics. This work was conducted by the Research & Evaluation Department of the Saint Louis Science Center. This front-end study was designed to inform the content development of the Bridging Earth and Mars (BEAM) exhibition, which is being developed by the Saint Louis Science Center with the support of funding from NASA. The main objective of the evaluation was to gather information from Science Center visitors about their familiarity