They're short 2 towers.
Because there is a lot of weighting. *sorry. i woke up at 2 am with this in my head.
2.B or not 2.B
Prankenstein!
Exoplanets Thought that one up myself.
Because they don't know how to defend their towers.
It's the only chance they have to mate.
One. They hold it in place and wait for the world to revolve around them.