R&S: Do you think an alien invasion is ever possible in the distant future?

History shows that more advanced civilizations tend to end up the conquerors, even if their intention was not to do so. IF that were to happen, I would bet it would be a pretty good chance said invaders would end up hostile. Now due to my beliefs and faith, I don't believe there are other civilizations out there. Again, if I were proven wrong, I would be willing to bet they would be hostile.