Are we alone in the universe?

[Ghogiel]

I've heard that theory, yes, but how do we have so many variations of life-forms on Earth in that case?

Evolution.

 

anyway I don't buy life evolving on comets. The conditions aren't likely to appear on a comet very easily. It's much more likely that it appeared on Earth, as the environment here is probably much better suited to this type of chemical reaction. I'm liking early RNA world, a few years ago, some dude managed to get RNA to form, the lab controls are basically heat, ultra violet radiation some basic chemicals, all found in abundance in primordial Earth. Still a ways to go.

[Lisnpuppy]

The theory about comets that I have heard is not that life was in them, but that the massive comet and asteroid barrage that hit the Earth in several phases caused the reaction that allowed the first, most basic building blocks of life to begin to form.

 

Just tossing that in there.

[bubbafriend]

IMO I think the universe is just too big for us to be alone. It wouldn't make sense in a place as big as our universe we are the only life

[zegh8578]

i seriously doubt we are alone in the universe, but i am adament about

 

1. they cannot look like humans. im not gonna debate this. read a biology book or two.

 

2. it is _extremely_ unlikely we have ever been visited, and

 

3. IF there is no intelligent life anywhere near out there, we should shut up and accept it, and not go nutty and start inventing things, like we do so well.

 

Lisnpuppy: life is simply molecular activity. there is no "extra magical spark" that is enigmatically missing. comets simply brought the main ingredients for life, most importantly water and carbon. it is suggested intense weathers on the early earth, most imortantly electrical charges from lightning, have helped "mix up" this molecular activity, giving rise to the first basic "enzyme like" life-like activities.

Edited November 26, 2011 by zegh8578

[marharth]

They could look similar to humans, it is just very unlikely.

[zegh8578]

They could look similar to humans, it is just very unlikely.

 

technically true

 

i am mostly refering to mass medias tendency to jump right onto the humanoid variant of extraterrestrials

 

the percentage of people-like life form on earth is... 0.0000000[...]0001 or something :D

if we counted space into that, well... we'd be adding a lot more zeros

[Jopo1980]

Let´s not forget that our universe is not the only one out there. We live in a MULTIVERSE according to physicists and that increases the likelyhood of life appearing somewhere in the multiple universes.

[zegh8578]

Let´s not forget that our universe is not the only one out there. We live in a MULTIVERSE according to physicists and that increases the likelyhood of life appearing somewhere in the multiple universes.

 

that IS a matter of debate, not a fact.

 

imo, it is likely, yes, that this universe is one of many. it almost explodes my brain.

[Jopo1980]

It´s not a brain blowing fact. I just consider universes to be 4 dimensional "bubbles" floating in a sea of SOMETHING, a suprauniversal void or as some scientist named it "bulk". 4 dimensional in a way that each universe has 3 spatial coordinates X,Y and Z and of couse the 4th dimension is time, so each universe has its own time and the space outside the universes has no time or is time a suprauniversal dimension which is present even outside the universe? After all there had to be something before the Big Bang, other universes and the like which existed before ours. But the theme of multiple universes has been explored in science-fiction by the way of alternate universes and alternate timelines. Is there a universe out there in which Germany won the WW-2 etc.?

[zegh8578]

It´s not a brain blowing fact. I just consider universes to be 4 dimensional "bubbles" floating in a sea of SOMETHING, a suprauniversal void or as some scientist named it "bulk". 4 dimensional in a way that each universe has 3 spatial coordinates X,Y and Z and of couse the 4th dimension is time, so each universe has its own time and the space outside the universes has no time or is time a suprauniversal dimension which is present even outside the universe? After all there had to be something before the Big Bang, other universes and the like which existed before ours. But the theme of multiple universes has been explored in science-fiction by the way of alternate universes and alternate timelines. Is there a universe out there in which Germany won the WW-2 etc.?

 

personally, i am very doubtful about "paralel universes"

if theres a multiverse, each is unique, imo, like... any geographical place. similar possibly, but unique

 

i cannot accept this idea of "another me" in another universe, with "another path in life" etc. too wishfull-ish imho