Tardigrades are the only living organism that we are currently aware of that can survive the vacuum of space. But I am talking about advanced, intelligent lifeforms that can defy our understanding of living organisms. The earth is unique because it can accommodate a variety of living organism that depend on an ecosystem. A similar planet to earth would be at such a distance that it would be near impossible for organic complex life to surpass their own biological limitations and to be able to survive the harshness of space.
How you going to make a comment like that??? You don’t know which life forms and how far developed life forms in other solar systems are. UFOs been around since the beginning of civilization and they not no humans or some damn demons.
We have one of the youngest solar systems in the neighboring systems our Sun is only what 4 or 5 billion years old