We are not alone. I believe in extra-terrestrial life. Ailens exist, the government/air force probably just covers it up.
Then, perhaps you could explain to me how the governments manage to cover up alien existance so well, when they can't seem to wipe their own behinds without bickering about what toilet paper to use.
From what we know of the universe, Earth is the only planet that can sustain life. Therefore from our limited knowledge we can say that atleast for a couple million light-years, the living beings on earth is the only life in this sector of the universe. However, living things on earth are carbon-based life-forms, a different sort of based-life can be out there somewhere in the universe.
As a Bible-believing Christian, there is mention of 'fallen angels', these demons can be what us humans define as 'alien'.
Exactly, from what we
know. As you said, our knowledge is
limited. Any cosmologist or astrophysicist will tell you that we know very little in relation to the entirety of the universe.
Also, I want to point out that "millions of light-years" isn't really that big of a length. Consider that the CLOSEST galaxy to the Milky Way, the Andromeda Galaxy, is 2.5 million light-years away. That's the closest one of several billions. In comparison, Andromeda is in our back yard.
That'd be very rare since then the planet they live on would have to be exactly the same as our planet. They probably won't be like the aliens in sci-fi movies, but I don't think they'll look like us.
Here's what we know. All life
as we know it requires liquid water. We know that water is quite commonly found in the universe, but most of it is frozen. Jupiter's moon of Europa is one such case, being completely covered in water and ice. It's believed that Europa's ice actually covers a vast ocean of water underneath, which is kept as liquid water due to the heat of the moon's core, as well as it's eliptical orbit around Jupiter (which has a "kneading" effect on the moon, heating it up). We also know that each star has a "Goldilocks" zone, where it's not too hot, and not too cold. Just warm enough for water to exist as a liquid.
I also want to point out that we have already found earth-like planets out there.
Gliese 581g is one such planet.
Note that Gliese c, g and d are located in the [Habitable Zone] of Gliese 581. Because Gliese 581 g is located near the center of this zone and is
very likely to be warm enough for there to be liquid water, which is an essential ingredient for life. Gliese 581c may be too hot and Gliese 581 d may be too cold.
As far as I know from my biology class, life on earth began with reactions in the earth's primitive atmosphere catalyzed by lightning strikes, creating bubbles made of phospholipid bilayers. These bubbles, by chance and chance alone, became cells of microbes when sustainable reactions became occuring inside, creating RNA and the very first organelles. Even today, all cells have a membrane made of a phospholipid bilayer. The conditions under which an event like this could occur are very specific: the earth's atmosphere had a specific balance of gases at this time allowing the necessary reactions to take place.
In that case, it's highly, highly, highly, HIGHLY unlikely that another planet could simulate an event that could create cells like this. Even if, by some crazy amount of luck, a planet was able to stage the beginning of cells in a similar way, alien organisms would evolve in a much different way than humans due to different environmental conditions.
Building off of that, let's say that aliens were able to evolve in exactly the same environment as earth (which is nigh impossible, but it's just an example). Even if this was the case, there's a VERY high chance that natural selection would take this alien's evolution in a different direction than humans. Nature can find different solutions to the same problem, and as I always say, pretty much everything in nature is driven by chance and chance alone. It's a miracle that humans were able to evolve into what we are today.
I won't deny that it's very unlikely, but I will preface it by saying that you can't even begin to fathom the sheer number of chances the universe has taken at creating life. But, as unlikely as it is, we're living proof that life has happened before. It also means we're living proof that life CAN happen elsewhere if given the right conditions. And, considering just HOW insanely large our universe is, the "unlikliness" of life happening ... isn't really all that small, actually. Our planet is proof that the conditions can be met.
If you can muster it, try to consider just how many STARS there are in the universe. We estimate that our Milky Way Galaxy has roughly 100,000,000,000 stars. We also know that our closest galactic neighbor, the Andromeda Galaxy, is MUCH larger than ours is. Between those two galaxies alone, it's not that big of a stretch to believe that there's roughly
half a trillion stars. Now, consider that big-name physicists like Stephen Hawking guess that our universe has a couple hundred billion GALAXIES in it.
For each of the countless stars, burning away in each of the billions of galaxies, having countless more planets that orbit them and countless more moons that orbit the planet ... as "unlikely" as it seems for life to happen, and even if we are the only planet in the
entire Milky Way Galaxy that has life, there are still more chances for it to happen than any one of us humans can possibly comprehend. Now, if your mind hasn't yet been blown, consider that our universe is roughly 13.7 billion years old. Just how many chances do you think that our universe has taken at creating "life-sustaining" planets over the course of that 13.7 billion year span?
I'm not saying that it's not unlikely for life to have happened. I'm just trying to point out that as unlikely as it seems for life to exist, it's exponentially more unlikely for life outside Earth to have NEVER happened anywhere in the entire history of this universe.
