I put the Flash animations from my YouTube videos onto my website for your viewing or download.
Here is the first video (Part 1) that uses the animation:
The animations can be viewed or downloaded here:
http://scott.teee.tv/swf/Twin_Paradox_01.swf
http://scott.teee.tv/swf/Twin_Paradox_Planets_3-a.swf
http://scott.teee.tv/swf/Twin_Paradox_Planets_another_planet.swf
http://scott.teee.tv/swf/Twin_Paradox_LIght_Round-ship_no_age.swf
http://scott.teee.tv/swf/Twin_Paradox_LIght_Round-ship_computer_slow_speed.swf
http://scott.teee.tv/swf/Twin_Paradox_Planets_Large_Green_ship_and_black.swf
http://scott.teee.tv/swf/Twin_Paradox_10to90.swf
http://scott.teee.tv/swf/Twin_Paradox_Second_Paradox.swf
http://scott.teee.tv/swf/Twin_Paradox_Light_Clocks.swf
http://scott.teee.tv/swf/Twin_Paradox_Triangle.swf