The International Space Station, the Hubble Space Telescope and the SEASAT satellite are the three brightest satellites in low earth orbit.

Pick a satellite with the radio buttons. What you will see is a green line that shows where the satellite will be during the next 24 hours. Then there is a red marker that shows where the satellite is right now (it may be on the other side of the planet, so spin the globe to find it). If you zoom in a little you can see that the marker updates every second.

Shift-drag and Cntl-drag are your friends to get nice views.

Note: You should update the TLEs in the code as they will be stale.

Derived from: http://www.satellite-calculations.com/TLETracker/SatTracker.htm
All credit to Jens T. Satre for creating SatTracker.htm
Used with permission of author