This article explores immersive learning experiences for young learners in a planetarium setting. These experiences open new learning possibilities and ignite children's inquiry and imagination. The authors describe a naturalistic observational study that examines two immersive planetarium programs for young children. Data was collected as observational reflections that captured children's interactions and questions. By analyzing reflections alongside our observations, insights were revealed about expansive literacy process associated with immersive learning. Implications surface the benefits and drawbacks of immersive learning experiences in planetariums and offer design considerations museum for programming specifically aimed at young children in all ages museums and science centers.