Why we haven't found aliens yet
For ages humans have been wondering if we are alone in the universe or not, and tried to find any kind of life outside our planet but nothing has been found yet.
Here are my top 3 reasons why we haven't found aliens:
The immensity of the universe
The distance beetwen the solar system and it's closest star (Proxima Centauri) is 4.24 light years away, that means that if we could reach somehow the speed of light, it would take more than four years for us to reach the star.
If any race of aliens lived there, first they would need to find some type of transportation which could make them move near the speed of light, and then they should have an objective or reason for visiting us, because they wouldn't travel that distance for pleasure.That doesn't seem that difficult for a really technologically advanced but it's improbable that there's alien life that near of us.
If we wanted to find aliens they should live in our galaxy, because the biggest problem with distance begins when we talk about the distance beetwen galaxies, even the distance beetwen the milky way and andromeda the closest galaxy is about 2.537.000 light years, so if they traveled here even at the speed of light they would probably die before reaching us.
Most civilisations destroy themselves
The commonly known “great filter” hypothesis is that at some point in the development of intelligent forms of life there is often some obstacle that stops it's further advancement. It could be anything, like war, scarcity or even global warming,
This obstacle or obstacles would end up with a large number of alien civilisiations and only a tiny part would remain, so life in the universe is abundant but it dies after evolving much, so there are only some advanced civilisiations that could contact with us.
In the case of humans, some people think that Extinction is built into our biology to ensure that we are eliminated before we create too much of an imbalance on Earth, and make sure other life can evolve and develop without us destroying them.
We are emitting more and more co2 every time, (as more developed more co2 emissions) so if we don't reach a high level of technollogy soon we will destroy ourselves too.
We Can’t Recognize Their Signals
This option is for me the most possible, because if we can't even undersand some animals sounds, and it's difficult and takes a lot of time to understand and learn a non native language it would be impossible for us to communicate with an alien civilisation with only signals.
We could have already found them but we just don’t recognize their presence. The problem is that we’re looking for something very similar to us, assuming that they at least have something like the same mathematics and technology when they probably don't.
It would be especially difficult when trying to communicate with a highly advanced civilisation because they might use untraditional communication methods (such as neutrinos or gravitational waves) beyond our current technological understanding.
Hello my friend
Post is awesome
Thank you, I'm glad you liked it.
Your first and third arguments hold the most merit. It's always interesting to consider the existence of aliens, and the sheer size of the known universe provides nearly endless possibilities.
Some food for thought:
Humans are weak physically, and not very resilient to weather. So, of course it is true that historical civilizations on Earth have eventually collapsed (when weather conditions changed, resources dried up, or conquerors arrived). But what is to say that an alien race would be remotely similar to us biologically? That is a heck of a stretch based on the [nothingness] we currently know about alien life.
Also, you should check into Co2 a bit more. It follows a logarithmic curve, where each additional molecule contributes to less of a warming effect than the previous. Additionally, increased Co2 in the atmosphere significantly increases the rate at which plant life grows on this planet. The catastrophic views about our climate are blown way out of proportion - as they have been for the last twenty years. There have been dozens of climate models predicting catastrophe in that time - and guess how many have come close to getting it right as time went by? Zero. I know this wasn't a climate post, so if you disagree, no worries. Just something that curious minds in the past have found intriguing; thought I'd share.
Thank you for explaining how Co2 works, but global warming could also happen even if each molecule does less than the previous, because our planet can't absorb Co2 at enough speed to counter it's effects.
Global warming may take more time than people say but gradually it will be happening in the future
Well, yes and no. Logarithmic curves essentially hit a point where they stop having a meaningful increase for each additional input, and we're nearing that point. Meaning that even if the levels continue to rise, they have an irrelevant impact.
As a corollary, are you familiar with the fertilization effect of Co2? Additional Co2 in the atmosphere causes a significant (both literal and statistical) increase in the growth of plants - meaning that the earth has a growing capacity to remove Co2 from the atmosphere.
I don't deny global warming, but the question we really need to understand and answer is: Is it bad? As I mentioned, many catastrophists have said it would be terrible, yet none of the predictions have ever been remotely accurate. Climate related deaths are dropping as the temperature changes and our technology improves.
Humans fundamentally change their environment. It's how we survive. We adapt, and every indication leads to the notion that we will continue to do so, even as our planet warms (or fluctuates, as it has always done).
Thanks for responding in a positive way!
What about other animals, they don't improve their technollogy so every time there are less species in the earth, maybe humans can survive but I thing we should take care of the other live beings.
Maybe plants absorb Co2 faster when there's more of it, but isn't there a limit to?
Also in order to absorb more, plants produce less protein and zinc so we would need some other way to supply humans from these essential things.
In conclusion global warming will be bad for earth's biodiversity.
If i don't reply to this in the next few days leave me a comment on one of my posts - id like to respondto you in some detail but I'm embarking on a 4-week, 5 state trip in the morning and things are crazy right now.
Okay, just talk when you have time ;)
I think we haven't found aliens yet ,because aliens are not real.
That's a possibility;)
Hi janop! I also believe that it could be possible for life to exist in ways that we just can´t detect by any of our current means. Maybe there are some forms of "energy" or "matter" that we just can´t detect, like centuries ago when cells and microorganisms were completely unknown to us. Maybe they even populate our solar system and we can´t detect their presence. And maybe even we can´t be detected by some of them. Who knows...
I think the problem is always related to technollogy, it will probably take centuries before we can detect alien life.
If you liked this post give it an upvote, if you want;)
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