Hi John. I’m sorry that this email slipped through the cracks
That particular demo depends on some commercially licensed software, so we can’t open source the code. We don’t normally plug our commercial side unless it comes up, but quite a few of the Cesium committers work for AGI (http://www.agi.com) which makes the aerospace/defense software (STK, STK Components, ODTK) that part of Lots of Satellites uses.
If you are looking to create a Cesium application that is similar to Lots of Satellites or needs to perform similarly analysis and visualization, we’d be happy to put you into contact with someone who can help you out. There are also some free versions of our products that you can check out on your own (from my above link).
Hope that helps, I hate sounding like a sales guy.