As far as we know Earth is one of a kind, but there are billions of other galaxies out there

But I think the conditions required for human life are so improbable even a billion galaxies is extremely unlikely to have them.

billions of galaxies = trillions of planets

so if there are no humans in other galaxies then there must be human-like species

this

inteligence is out there somewhere

The odds are astronomical, but I believe we aren't alone.

Drake Equation ftw.


http://en.wikipedia.org/wiki/Drake_equation

There has to be life in this galaxy. We have probably gazed at a star, or even a planet where life is in that system.
http://en.wikipedia.org/wiki/Gliese_581_d

There probably are intelligent life very similar to Humans somewhere, but it is impossible for other Humans to exist that did not originate from earth.

have you not been watching tv!!! shits real!

human race = no
alien race with comparable intelligence with human = very high probability

Define intelligence, because Humans are the only species stupid enough to destroy themselves en masse.

The odds of beings that even resemble humans in the universe are not very high, but there is definately some sort of life out there