Bhairitu, That's the reason Galileo was put on house arrest for the rest of his life when he saw that the Earth revolved around the Sun. For the same reason, Giordano Bruno got burned to the stake for speculating that there could be other humans outside of Earth. He might have also challenged the Church teachings with his knowledge of astrology or syncretism.
But it's still true that nobody has ever proved scientifically the existence of humanoids outside of Earth. Where are the aliens who ride these UFOs? How come the SETI program can't detect any evidence of intelligent communication out there?
