Defined "extra-terrestrial". Yes. They are called Humans. Recipe for life came from outside.

You do know what "EXTRA-TERRESTRIAL" means right? As in EXTRA, and TELLUS, TERRESTRIAL?

Next question:

Do the aliens believe in me? That s what I want to know.

I attended an MIT profs' lecture and there he said the chance of spontaneously creating a living cell was 1 in 100 times the proton masses of the known universe (I think it was 1x10 to the 40).

Ive no idea how that number is derived. However, as large as the universe is, I think we are far more rare than many believe.

Yes but living by what standards? Goes back to what we discussed earlier in the thread. I'm not saying your point ins't valid, it's very valid, and while I do believe in life out there I don't just assume how obvious it is based on sheer number of planets. But I just think we need to guard against basing the possibility of life on our current understanding of life.

In grade school I had a teacher who drove me nuts because he used to claim, "There can't be life on that planet because there is no oxygen."

-Who's to day it breaths oxygen?

"There's no carbon! Life needs carbon."

-No, carbon based life needs carbon. How do we know it's not based on something else? How do we know it's not based on an element we don't even know about?

"If it bleeds, we can kill it."

I rarely laugh at these posts but this one did crack me up :D

In the immensity of the universe, they surely must exist.

Because of the immensity of the universe, we will probably never meet them. :(

Where's the real-life Civilization tech menu? We need to tell our scientists to focus their research efforts on FTL travel.

I would think so, given the size of the universe life is unlikely to appear only once. Though I do remember reading an article somewhere suggesting that life on Earth may be one of the earliest appearances of life in the universe. If so, there may not be more life out there yet.

Also if the universe was infinite, then theoretically there must almost certainly be life out there, because given an infinite amount of space and time anything that can happen will.

Does warp count as FTL?
Most scientist would agree that FTL is impossible but warp is actually theoretically possible. That's why Star Trek always went Warp and Star Wars went FTL. One was Science Fantasy and the other was JUST Fantasy.

Close enough. It counts as long as it gets us there!

It's exciting to learn about scientists discovery dozens or hundreds of exoplanets. But my heart breaks a little when I think we won't be able to visit them -at least not in my lifetime. :(

THIS THIS THIS THIS!

I've had to stop watching "Trough The Wormhole" because I get so depressed about all the things out there I'll never get to learn about or see.

When thinking of this, which I can totally relate to, I like to take solace in the fact that at least I was born after the advent of modern medicine. Having no reason to fear for your life when feeling that first tingle in your throat is pretty awesome. Though it would have been infinitely better if we could've had the privilege of having been born after someone had figured out how to cure cancer, autoimmune and motor neuron diseases :P