I get so tired hearing that inane question.

Are we alone in the universe? Of course not! That's a no brainer.

In fact, I find it to be a stupid and meaningless question. Only a fool would believe we are the only form of intelligent life in a universe that has perhaps a million times more stars than there are grains of sand on our planet.

The correct question is: Have NHI visited or do they reside on our planet?

The question is not one of existence. Of course others exist. But is it possible to travel the distances required for interstellar travel, using some form of highly advanced physics?