The Existence of Aliens

Why did I choose this topic? I think this is one of the most interesting topics these days. We listen so much about aliens but do they really exist? This one question has no answer.
There are many questions about them. If they exist what will happen with us? If the aliens are friendly we can learn much from each other. Maybe they are more advanced in science than us. This will be a big advantage for us. But we can't be sure that this is true! They could be really bad. Maybe they will want to kill us or make experiments with us. Maybe we are better than them and they will use our experience and technicks for destroying us. We don't know.
I think this is the biggest mystery in the world. Maybe one day our forefathers will find the answer. Maybe, but we don't know!

[color=red]FOREFATHER
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