...worse, they might well have destroyed themselves in the meantime. The human race very quickly discovered the power of the Atom bomb. If the same holds for intelligent aliens then they might not last long. Perhaps they all blow themselves up soon after they discovered that e=mc².If civilizations take billions of years to evolve only to vanish virtually overnight then sadly we 've next to none chance to hearing from them, they simply too far away in time and space to reach. But there is one last possibility, that aliens who avoided destroy themselves are already colonizing the universe.
The human race has only too options when it comes to looking for advanced aliens, we can listen or we can be more active and broadcast our willingness to talk. We might think very carefully of what we might say. I think this might be just a little too risky (δείχνει ένα laser να εμφανίζει στο διάστημα "call us now, we are here - 1-800 HUMAN"). We only have to look in ourselves to see how intelligent life might have developed into something we wouldn't want to meet. We humans are already capable to manipulating the course of our own evolution.
Exactly the same would presumably be true of advanced extraterrestrials. Ultimately they could halt aging and become virtually immortal. What's more, they might have reached that point millions of years ago. It might sound unlikely, but if you think about it logically, alien technology should be as extraordinary to us, as a rocket ship to a caveman. I imagine they might exist in massive ships like these, having used up all the resources from the home planet bellow. Such advanced aliens would perhaps become nomads, looking to conquer and colonize whatever planets they can reach. If so, it makes sense to them to exploit each new planet for materials to build more spaceships so they could move on. Who knows what their limits could be, perhaps their capabilities would only be limited by how much power they could harness and control, and that could be far more than we first imagine. For example it might be possible to collect the energy from an entire star. To do that, they could employ millions of mirrors in space, encircling the whole sun and feeding the power to one single collection point. Such power might make it possible to warp the very fabric of space, and create a portal called a wormhole. This portal would act as a shortcut allowing them to travel huge distances in a blink of an eye. Like us, they would probably have evolved from a species used to exploit whatever it can.
So if aliens ever visit us, I think the outcome would be as much as Christopher Columbus first landed in America. Which didn’t turn out very well for the native Americans. So the journey which started with the search for water has led us to [...] our [...] that I think probably do exist. In such a massive place as the Cosmos we only have to look at ourselves for proof that extremely unlikely things can happen and do happen all the time. Let's just hope that if aliens do find us, they come in peace.
