In movie, Prometheus, Peter Weyland is very very old and he can only walk around with the help of an exoskeleton.
I would imagine Peter Weyland has all the money and resource to extend his life as much as possible.
Does anyone know how old he is? It is very interesting to see how cold he is when he is talking to his daughter who is also on board with Prometheus. Normally with a very old father and relatively young daughter, their relationship is closer.