Flash Development: Planetarium

Here is another cool piece of actionscript / flash development I recently ran across. It implements physics materialized with actionscript and I have to say that the result is really interesting and useful for those that want to build a universe of their own :P The controls are very simple. Just click on the [+] symbol at the upper left corner and manipulate the universe as you like! Add, remove, edit asteroids and planets, remove / change asteroids trails etc. Be careful though... don't evoke a Bing Bang No2!