Who are aliens?

We say there may be other living creatures in this world and we say those are more likely to live on some another planet. We call them aliens and we need to find them and we want o find them, at least some of us, and those that deal with search for the aliens are saying there are some possible messages from them and so on and so forth. Though, what if we are the real animals indeed? What if there are living creatures in the space that appeared there long before people did and they are living there for millions of years, but not for thousands of years like we are? What if? And what if it is us who are the real aliens, and we are the true invaders and we are those creatures that send messages to the space waiting for the answer. Maybe those green people feel at ease in this space and they don’t need us and they don’t want to meet us, but we feel a bit uncomfortable and we are looking for masters of this space. What if we are the real and the true aliens and we are problem for this space?