Anything Maxim?

So I have been using unity for a long time now (2 years) and I was wondering is there any limits to how big an object is or how far it is? I have realised that you can not zoom out any further when focused on a object the size of x100000 y100000 z100000. I also saw that when an object if very deep in space it no longer works properly! I wanted to know about this as I am making a space game and scaling everything down in a space games is very hard to keep the effect that planets a gas giants are much bigger and further away from you!

Unity thanks in floats, so the maximum value is float.MaxValue

HOWEVER you need to understand something about floats, and that is that their precision decreases as their size increases. So when working at the upper side of their values, you cannot do things like increment by 1