Why isnt NAsa using this idea?

Chuck Hoberman - Google Search

Packs up small then you expand it in space

[ame=http://www.youtube.com/watch?v=xRL0tMaNgjQ]YouTube - Original Hoberman Sphere[/ame]

 

To do what?

 

I can't believe you have never seen one of these. I had one as a toy when I was around 10. Neat concept but not to useful unless you need to ship large empty spheres without skin.

 

As a prefab.

 

Easy enough to skin on earth and reenforcement in orbit.the panels are all uniform I bought one for my kid when it was first available, the potential was rather obvious.
Deck and bulk heads added as needed .