In the whole universe there might be a planet, which we have yet to discover, looking like Earth with the same conditions as here with living "aliens" looking almost like humans
I believe in other lifeforms. There is no way, in how vast and extraordinary the universe is, that we are the only beings who have reached this level of mentality.
I don't know. There are possibly trillions and trillions of planets. But the odds of life forming even on a planet like earth is only less than 1 in 4 trillion. It's a near zero probability.
A typical alien is to humans what humans are to monkeys. Short, big-headed and unsurpassed technologically. Humans even abduct monkeys and do research on them.
