The live flight tracking system uses Google Earth .kml files created in real time by GPS systems on board both aircraft to draw a live 3D track over the earth mapping software. Through this system you can see the aircraft's speed, altitude, track and position among other data readout displays. These measurements change from project to project and may include altitude above ground, wind speed and direction, dew point temperature, concentration of CO2 and CO or other data of interest to the project scientists.
When running Google Earth, you will see an interface like the figures below that updates every minute with the latest flight track. When there are no current flights or during times that the real time satellite data feed is down, you may use FlightAware to track the aircraft's history or future flight plans.