I love a good space visual... and this one shared by Dynamic Diagrams is fantastic. The interface is pretty simple, select your astronomer (Copernicus or Tycho) and see what the orbit of the planets looked like according to each of their theories. There are other buttons and sliders that let you trace orbital paths, speed things up or down and set your own date. Simple, fun and educational. Even the soundtrack is pretty cool (if a bit repetitive). I wish you could zoom in and out on this one (to see inner solar system a bit more closely), it is still really neat!
Ideas For Teachers & Students
Clearly, this would be a great visual to use when discussing space and astronomy with students.