I love it when people quote figures about the likelihood of life. How can any one possibly know ? The Drake equation or any other method requires so much guess work that it has no real value.

We know there is life out there an some will be intelligent. That is unless you prefer the alternative theory that life began only once in the entire Universe. Not very likely really.
Unless some intelligent beings have found a way to travel here, then I don't suppose the density of life in our Galaxy will be much of an issue for any of us in the near future and possibly ever.
PS. I once saw a a very convincing UFO, so I keep an open mind about the subject of aliens.

Edited by TheJudge (24 Jul 2015 10.53pm)

Neil De-grasse Tyson I'm sure is a little more qualified to make this claim than any of us, without quoting the whole chapter I suggest you have a read it's a thouroughly enjoyable book.

in its rawest form there are hundreds of billions of planets like ours sitting in their respective habitable zones, every object in space would of encountered it's own bombardment shortly after it's formation that's your seeding of the elements done (courtesy of exploding stars I might add) , once the planet has sufficiently cooled it takes no time at all to create an organic soup as shown in Carl Sagans Cosmos, from there we simply need to have patience for early simple cells to form such as archaea (see our ocean)
it really is as simple as e=mc2, energy can be converted into matter & matter can be converted into energy, maths shows the probability of intelligent life to be in the billions, our understanding of maths is now good enough to make the prediction.

Going back to your post you try to discredit the claim yet agree there is life out there.

The mountains are calling & I must go.

Maybe we can send all these bloody immigrants to this new world. Let's give them a one way ticket.

Edited by fed up eagle (25 Jul 2015 3.39pm)