- Relative diameters of the Earth, Moon and Sun.
- Eratosthenes and the circumference of the Earth.
- Relative distances of the Earth, Moon and Sun.
- Tour the world's largest Solar
System Model, in Peoria, Illinois, hosted by Bradley University
Physics department and Lakeview Museum. Or tour it by bicycle! This
interesting website also includes the following pages:
- How much would you weigh
on each planet? On a moon or on a star?
- Build your own walking
tour of the solar system: create your own model to any scale.
- Web-page model:
Scroll from the sun to Pluto to scale. This page takes several minutes
to load, of course.