Hawking always makes me smile.

[Atheist_named_Christian]

Sorry but I agree with Hawking on this one.

Let's assume that these aliens are technologically so far advanced that they can reach the Earth. We would indeed be in the same position as the native Americans. We could do nothing against them whether their intentions are good or bad.

There are various scenario's that could play out if a technologically advanced civilization makes contact with a less advanced one, but if history has taught us anything, it rarely ever turned out for the better for the less advanced one.

But then there's nothing we could do about it, anyway. What we could succeed in is killing ourselves before they kill us. And I personally consider the first option more likely to happen.