Solar System Resources

http://space.jpl.nasa.gov/

Our NASA Resources offer two solar system models of relative distances between planets.


1. A Linear Model of the Solar System

2. A Radial Model of the Solar System. Our Radial Model Resources include an activity for students using string and models of planets to see heliocentric longitudes.

Resources that chart these longitudes can be found here.
http://www.as.wvu.edu/~planet/planetary_heliocentric_longitude_2006.htm