I was reading an article on Earth-like extrasolar planets and watching Star Trek at the same time when I got the idea. Could intelligent aliens look like humans? Supposibly Earth-like extrasolar planets might be very commen (some even believe that 25% of all planets in the galaxy are Earth-like). Conditions on those planets would be very similer to those on Earth, hence the name. One could imagine a near copy of the sun with a planet the size of Earth in the habital zone, would have a very similer climate and geographical formations to Earth. Could'nt humanoid beings develope there? When you think about it, it would'nt be that hard to imagine something like Cardassians or Klingons developeing. Some of these humanoid spices might have strong ties to reptile DNA, and look like the Cardassians or Xindi from Star Trek. Something like Klingons might be a more robust, primitive version of us. So my question to you is this: Would you be suprised if most intelligent beings in the galaxy are humanoid?