== Geodesic - or Not == 

 Not everything that looks like a dome is necessarily geodesic. Fuller's principles about geodesic lines included specific circles of struts similar to the classical arch for maximum strength. If you look at plans for real Fuller domes, you might be surprised how many different lengths of the struts are used to channel the structural forces in an optimized way. 
 I haven't yet found out about the Bauersfeld dome, and I can't tell about the rotating animation, but I suspect that both are built in a more economic way, with as little as possible different strut lengths. 
 (Also, as I understood it, the concept of "geodesic" only makes sense in relation to gravity, so a ball spinning in space might be rather pointless.) Similarly that Kyushu dome mentioned above could be something else. I don't know about that. 
 The biggest geodesic dome was a railway tank car servicing depot in the southern US IIRC. I'll have to look it up again before I can go into more details.  
 Eden Project is obviously not geodesic: If you trace a line of struts you can't find a single great-circle. I also suspect, that all struts are the same length in any given dome. 
 Don't understand me wrong: I'm not a "Fuller was the biggest genius ever" fanboy, and I also love Eden Project - but I am an engineer, and I'm trying to get the technical details unmuddled.