Celestia Forums

What is a Celestia Education Activity,like the 4.2 Outer Solar System.Is it a kind of addon?

it is a school /classrom learning tool that fsgregs made for N.A.S.A.
that they canceled
to have a look at 4.2 in html format click the link below

http://68.43.175.239/EdTest/WWW/staticpages/Activity4_2.html