During my final year at university I designed the typeface Proton. Proton is a bespoke typeface designed for use when explaining the distance between bodies in our solar system.
Frustrated with the fact that all educational material relied on the use of not-to-scale representations of planets and stars, Proton was designed so that large distances could be covered with its one line thread. The idea is that as the typeface is created using just one line which runs through all the letters, we can use this as a distance, allowing for vaster distances to be visualised in a comfortable and engaging way. This means that with Proton you can condense the entire distance from the Sun to Pluto into a more manageable yet to scale way than before. In theory this can be used for posters, wall charts and with some careful planning, school text books.
Shown below is Proton in effect at Manchester School of Art's degree show 2009.