Science On a Sphere (SOS) at Fiske Planetarium will raise awareness and understanding of Earth system science for over 30,000 visitors per year, using student docents and newly-developed, tested pedagogy. SOS will enhance Fiske’s ability to engage 3,000 university students and 30,000 K-12 students and members of the public. A student docent program will transform the traditionally passive experience of a planetarium visit into an interactive learning opportunity. The docents will be drawn from two sources: undergraduates who will be future science teachers, who we take from a selective CU program called "STEM-TP", and Hispanic university and high school students taught by Fiske's planetarium manager Francisco Salas. Docents will talk with visitors and help them understand key science issues that affect the earth, leading to more informed decision-making. Fiske will develop bilingual pedagogical material and new data sets, and share them with NOAA and SOS sites. To support the docents, and visiting students and teachers, Fiske Education Manager Traub-Metlay will lead development of explanatory materials that challenge visitors and provide context for what they are seeing. These will be translated into Spanish by Fiske Manager Salas. New data sets, contributed by faculty members, will expand the range of SOS, into space, adding solar interior models, the celestial sphere, and the cosmic background radiation from the Big Bang, along with new terrestrial data such as the worldwide distribution of forest fires. SOS will become a focal point in Fiske's longstanding tradition of teacher workshops, which are often done in cooperation with the University of Colorado and NOAA scientists and highlight NOAA’s role monitoring the earth and sun. It also will be integrated with a small suite of hands-on exhibits we are installing that explains how observations can be made in infrared, ultraviolet, and X-rays in addition to visible light. These would complement SOS, which features multi-wavelength data. Fiske and its Boulder Colorado-area partners have raised $75,000 to cover the full cost of SOS hardware, and have formal institutional commitments to long-term program development. This award from NOAA will go into materials development, evaluation, and student pay. Colorado communities are aware of NOAA’s important work and the nearby David Skaggs Center, but security measures make it difficult to visit there. Fiske is much more accessible. Fiske will improve the usefulness of all SOS sites by conducting formative evaluation to assess what kinds of SOS presentations work best with public and school audiences, giving feedback to NOAA and all SOS users.