lol i got it to go to 1 planet and i clones that then i threw the cloned on at the original and they spun to slow to fly away but 2 fast 2 merge into 1 so it was 2 connected with a "bridge"
I really don't care about the swearing, but what I think you should do is make it so the building can collapse on itself and not just go through itself.
NOTE: The actual in-game numbers do not correspond with reality, but this simply shows how the extra mass destabalizes the star, and causes a nebula-forming supernova.