What will happen if there is a xenomorph on the ISS?
Answer from: Maxim K.:
Firstly it will be direct proof that we are not alone in the universe. Secondly it will follow three scenarios. Either the entire crew of the ISS will die a heroic death and the ISS will be dropped into the ocean to kill the alien creature, or they will fire a missile at the ISS. Either the cosmonauts can throw the xenomorph into outer space or kill it somehow. Or, at the cost of the lives of several people, the xenomorph will be captured somewhere in a locked compartment, and then taken to earth for study.