Imagine soaring in the Earth's atmosphere to near the edge of space. Is there air to breathe? Is it dark? Are there clouds? What about air pressure? Fifth-grade students from Ferguson Elementary in Klamath Falls, Oregon, were wondering these questions as they participated in "To the Edge of Space," an exciting, yearlong collaborative Earth science learning experience developed in partnership with Oregon Institute of Technology (OIT) and Oregon NASA Space Grant Consortium. The project culminates in a high-altitude balloon satellite launch at the university. This article describes the inquiry-based project that was developed using Toyota Tapestry grant monies. (Contains 2 online resources.)