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Life in the universe. Does it only exist on earth.

Dan From Smithville

What we've got here is failure to communicate.
Staff member
Premium Member
Hmmmmmm ... Don't know.

Life is a tricky word, as is universe. Are we including God, if s/he exists? Or angels, spirits, ghosts etc. And by universe, are we thinking observable universe or a potential multiverse etc.

If we are including everything, then since I believe in God I'm going to say that life isn't restricted to earth. If we allow inclusion of a multiverse, then again since I think such is likely to be the case, it's inconceivable in a multiverse that life is restricted to earth.

However, if we limit ourselves to just our observable universe then it becomes much less clear. I've read books by Simon Conway-Morris and Paul Davies who argue that the goldilocks conditions required for life, and most especially human-like intelligent life, to originate and evolve are so astronomically rare that even the universe's vast size is no guarantee that there's any other life out there. Indeed, to both it seemed like we are probably the only intelligent life in the universe.

The Fermi paradox might also give one pause (or it does me!).

So, if we mean any kind of life anywhere in a multiverse - I think lots and lots and lots of life. If we mean intelligent life in our observable universe, I'm agnostic and don't know.
One possibility of the Fermi paradox is that life and intelligent life do arise, and possibly frequently, but there is some barrier that intelligent life has difficulty crossing. This barrier may eliminate intelligence and be the reason we are not hearing from any.
 

Dan From Smithville

What we've got here is failure to communicate.
Staff member
Premium Member
It’s possible there is life on other planets, but it would be nice to be able to explore them to determine for certain.
My love of speculative fiction drives the hope that one day webwill, but sadly, I doubt I will be around by that point. I do hope people still are.
 

Dan From Smithville

What we've got here is failure to communicate.
Staff member
Premium Member
At least in the case of Conway Morris he may not quite know what he is talking about. Yes, intelligent life is likely to be extremely rare, But he may have underestimated the size of the universe. One huge problem is that travel or even communication may be all but impossible between intelligent species so we may never know. For example with current technology, and this is barring some huge major change in our understanding of physical laws, interstellar travel appears to unfeasible. I love science fiction but am willing to admit that such travel may be the purest of fictions.

In other words this is an interesting thought problem, but it probably has no real world solution.
At least not likely solvable in our lifetimes.
 

Dan From Smithville

What we've got here is failure to communicate.
Staff member
Premium Member
Among the possibilities regarding our lack of evidence for intelligent life are: we are some of the earliest. Even at this age of the universe it is possible we are among the first. There just isn't anyone or at least very many to talk to.

Another possibility is that we are late to the game and earlier intelligent life is hunkered down and quiet or eliminated due to conflict.
 

Mock Turtle

Oh my, did I say that!
Premium Member
We might just do away with several religions?
Perhaps.
But I suspect there will be several more "revealed".

Fine by me as long as they are not anchored to the past or to some set notion that just keeps us as slaves to such or just creates frictions.
 

Unveiled Artist

Veteran Member
It seems we have two types of opinions here...
1. If it can't be seen or tested it doesn't exist
2. God created life on earth, that's all.

IMO both of those opinions are closed minded.

There are trillions of planets with many billions of earth like planets orbiting their own star. Odds are life does exist elsewhere...
-if life can naturally arise here, couldn't it naturally arise on one or some of the other billions of planets?
-if god created life here, couldn't he have created life on one or some of the other billions of planets?

The universe is 13.7 billion years old. Other planets have had billions of years headstart on the young 4.5 billion year old earth.

Whether you accept life arose naturally or believe a god created life, do you think life exists any where else in the universe? Why or why not?

PS.
I'm not looking for the science quack that will only answer "science can't show it, so it must not exist"
And
I'm also not looking for the religious quack that will only answer "God created life here and here only"

Be optimistic and open minded with your answers.

Actually, yes I do. I feel it's very self centered to think of our selves being the center of the universe. It's a political and religious standpoint I disagree with.

As for god, that's one of the main reasons I can't see its existence to make sense of creation...as if god exist, it would make no sense that the Earth is his sole interest.

I'm open to life on other planets.
 

SalixIncendium

अग्निविलोवनन्दः
Staff member
Premium Member
It seems we have two types of opinions here...
1. If it can't be seen or tested it doesn't exist
2. God created life on earth, that's all.

IMO both of those opinions are closed minded.

There are trillions of planets with many billions of earth like planets orbiting their own star. Odds are life does exist elsewhere...
-if life can naturally arise here, couldn't it naturally arise on one or some of the other billions of planets?
-if god created life here, couldn't he have created life on one or some of the other billions of planets?

The universe is 13.7 billion years old. Other planets have had billions of years headstart on the young 4.5 billion year old earth.

Whether you accept life arose naturally or believe a god created life, do you think life exists any where else in the universe? Why or why not?

PS.
I'm not looking for the science quack that will only answer "science can't show it, so it must not exist"
And
I'm also not looking for the religious quack that will only answer "God created life here and here only"

Be optimistic and open minded with your answers.

Given the size and age of the universe, I think it's arrogant to assume that we are the only planet with life.

I'm not saying that such life in any way resembles what we see here, or if it's intelligent relative to that on earth, but to think that no planets in the universe that contain at least some single celled organisms is a silly notion.
 

ChristineM

"Be strong", I whispered to my coffee.
Premium Member
It seems we have two types of opinions here...
1. If it can't be seen or tested it doesn't exist
2. God created life on earth, that's all.

IMO both of those opinions are closed minded.

There are trillions of planets with many billions of earth like planets orbiting their own star. Odds are life does exist elsewhere...
-if life can naturally arise here, couldn't it naturally arise on one or some of the other billions of planets?
-if god created life here, couldn't he have created life on one or some of the other billions of planets?

The universe is 13.7 billion years old. Other planets have had billions of years headstart on the young 4.5 billion year old earth.

Whether you accept life arose naturally or believe a god created life, do you think life exists any where else in the universe? Why or why not?

PS.
I'm not looking for the science quack that will only answer "science can't show it, so it must not exist"
And
I'm also not looking for the religious quack that will only answer "God created life here and here only"

Be optimistic and open minded with your answers.

Non science, non religious answer, but one based on statistical practicality. If there is no other life in the universe then it seems an awful waste of space.

Now a quick sciency answer. Entropy predicts that during the life of the universe a relitively short (in universal terms) segment of time will favour life. Given the possible number of habitable planet's the chances are high that some sort of life has evolved on them just as it has on earth
 

Audie

Veteran Member
It seems we have two types of opinions here...
1. If it can't be seen or tested it doesn't exist
2. God created life on earth, that's all.

IMO both of those opinions are closed minded.

There are trillions of planets with many billions of earth like planets orbiting their own star. Odds are life does exist elsewhere...
-if life can naturally arise here, couldn't it naturally arise on one or some of the other billions of planets?
-if god created life here, couldn't he have created life on one or some of the other billions of planets?

The universe is 13.7 billion years old. Other planets have had billions of years headstart on the young 4.5 billion year old earth.

Whether you accept life arose naturally or believe a god created life, do you think life exists any where else in the universe? Why or why not?

PS.
I'm not looking for the science quack that will only answer "science can't show it, so it must not exist"
And
I'm also not looking for the religious quack that will only answer "God created life here and here only"

Be optimistic and open minded with your answers.

Eithrr way, life being unique to esrth seems very unlikely.
 

McBell

mantra-chanting henotheistic snake handler
It seems we have two types of opinions here...
1. If it can't be seen or tested it doesn't exist
2. God created life on earth, that's all.
1. anything that can not be seen or tested I have no reason to make assumptions about its existence.
2. See number one
 

BSM1

What? Me worry?
Not only does life not exist anywhere else in the universe, but the universe as well does not exist anywhere out side of our perception; or it does.
 

Dave Watchman

Active Member
Whether you accept life arose naturally or believe a god created life, do you think life exists any where else in the universe? Why or why not?

No.

I vote no.

No life anywhere else in the universe.

I'm also not looking for the religious quack that will only answer "God created life here and here only"

If he looks like a duck, swims like a duck, and quacks like a duck, you found him.

I'm your huckleberry.

The duck test is a form of abductive reasoning.

The test implies that a person can identify an unknown subject by observing that subject's habitual characteristics.

Asking if there's life on other planets is like asking if there's another Lucifer, another group of fallen angels.

God is doing something here.

God is here.

God is 3.5 minutes away.

Ultimately, when the sin problem is eradicated, God will dwell here on the Earth with man.

And He will be our God and we will be His people.

"And I heard a loud voice from the throne saying, “Behold, the dwelling place of God is with man. He will dwell with them, and they will be his people, and God himself will be with them as their God.

"He will wipe away every tear from their eyes, and death shall be no more, neither shall there be mourning, nor crying, nor pain anymore, for the former things have passed away.” - Revelation 21:3-4​
 

beenherebeforeagain

Rogue Animist
Premium Member
It would have to be detectable to us. I cannot say anything about aliens observing the Earth over its history.

And I would say that we have been intelligent even before Homo Sapiens. But we have not left any sign of it until more recently. I would say that stone tools alone are evidence of intelligence but it would take quite the search to find those if one did not live here. There could have been intelligent dinosaurs. Though brain size may argue against this. That is why I used a bit of a qualifier in my post. I did not want to claim that we were the only intelligent life form ever on Earth. We may be. Or we may find that intelligence has existed several times. But right now we do not know of any others.
I think it's important to realize that the ability to manipulate aspects of the environment is not necessarily correlated with intelligence. Cetaceans and elephants display considerable intelligence, as do the corvids, but are limited in their ability to manipulate their environment.
 

Ouroboros

Coincidentia oppositorum
There are trillions of planets with many billions of earth like planets orbiting their own star. Odds are life does exist elsewhere...
Totally agree. It's more likely though that there are many magnitudes more than trillions of planets, since the current estimate of stars alone is 20 sixtillion, and as the exo-planet research is showing more and more that many stars have multiple planets, so the number is probably higher than the number of stars, I think.

Somehow, it would be a kind of waste to have that huge universe and only life on one single planet.

-if life can naturally arise here, couldn't it naturally arise on one or some of the other billions of planets?
Absolutely.

-if god created life here, couldn't he have created life on one or some of the other billions of planets?
Yup, and why would God create so many stars and planets that we can never get to and many we can't even see only for the purpose of being empty? It doesn't make sense to have them void and empty. It would make sense he/she/it made them all to be full of life

Be optimistic and open minded with your answers.
I'm an optimist, like you, about it. I do believe there's life out there.

Did you hear they found another Earth like planet only 4 light years away in the Proxima Centauri system?
 

Ouroboros

Coincidentia oppositorum
I think it's inevitable that there's life elsewhere. Whether or not we'll manage to communicate with intelligent life elsewhere is a different question and the Drake equation is designed to conceptualize that:

drake-equation-1600px.jpg
Here's something that's kind'a strange with the Drake equation. First, life in the universe isn't the same as life in our galaxy. The possibility of life in the universe is different and is the usual question that comes up, while the equation is only about life in our galaxy. Secondly, the product is supposed to be the civilizations we can communicate with, well, the galaxy is some 75-100,000 light years wide, if I'm not mistaken. Which means it would take 100,000 years for us to know if there's life communicating with us right now on the other side of the galaxy. The time and size isn't part of the equation, which is really should be, if the answer has to do with what we can communicate with.
 

Ouroboros

Coincidentia oppositorum
Many accept nature created the universe, the stars, the planet's, life, etc

Many think god created the universe, the stars, the planet's, life, etc.

What if nature and god are synonymous?
What if nature is god, god is nature?

What then?
That's how I see it. I consider myself a pantheist and think of God and Nature as one, that means I can believe in God and Naturalism equally. :D
 

Heyo

Veteran Member
Detectable to who, us?
Depending on how intelligent is defined we've been basically intelligent for what, maybe 200 years out of earth's 4.5 billion years existance(or maybe the bronze age could be considered intelligent too so then we have several thousand years). That's not saying much.
There could be life billions of years ahead of us in intelligence an technology.
The interesting factor isn't intelligence (fi) but communication (fc) or rather detectability. An alien civilization doesn't have to send radio waves in our direction to be detected. But we can assume that highly technological civilization would transform their environment in a detectable way, e.g. with a Dyson Sphere. We haven't detected one so far. I.e. we can say hat there is no advanced civilization in our vicinity at the time.
As for simple life, the next generation of telescopes will be able to make spectral analyses of the atmospheres of exo-planets (if they have any). I.e. we could detect bio markers like ozone or methane. So, in a decade or so we will know if there is life on a planet outside our solar system.
 

Subduction Zone

Veteran Member
I think it's important to realize that the ability to manipulate aspects of the environment is not necessarily correlated with intelligence. Cetaceans and elephants display considerable intelligence, as do the corvids, but are limited in their ability to manipulate their environment.
I agree, but if you read my post it specified an intelligent life leaving evidence of its intelligence. In fact it acknowledges the possibility that you brought up:

". That is why I used a bit of a qualifier in my post. I did not want to claim that we were the only intelligent life form ever on Earth. We may be. Or we may find that intelligence has existed several times. But right now we do not know of any others."
 

We Never Know

No Slack
1. anything that can not be seen or tested I have no reason to make assumptions about its existence.
2. See number one

Do you assume the existence of dark energy and dark matter? Neither one can be seen or tested.
However there are things that make us think they exist like certain effects on galaxies and gravity, but that could also be a giant invisible pink unicorn.
 
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