Inspired by the inclusion of a British astronaut on the International Space Station, explanations and demonstrations that lead to an understanding of how satellites stay above the Earth are described. This is a mixture of separate ideas that have been demonstrated successfully at a public exhibition of science-based activities. Although some post-16 mathematics is included, the items being described are intended to help non-specialists and can be used with students aged 11-19 and possibly younger; they are also suitable for use with mature students.