!! used as default html header if there is none in the selected theme.
In this exercise, you are given the motion of a comet going around a hidden sun, and it is up to you to find out where the sun is.
This module requires that your browser supports Java Applets.The most recent version
Please take note that WIMS pages are interactively generated; they are not ordinary HTML files. They must be used interactively ONLINE. It is useless for you to gather them through a robot program.