In 2011, the Space Science Institute (SSI) engaged Insight Evaluation Services (IES) to conduct a summative evaluation of an online, multi-user space science game called MyStar. The game, which was developed with funding from the National Aeronautics and Space Administration (NASA), was designed to introduce late middle school-early high school students to the basic concepts of stellar and planetary evolution. IES assessed the effectiveness of MyStar in meeting specific learning goals, including in particular (1) The galaxy has “habitable zones” where planetary formation and/or life is more