Extraterrestrials : Why don't aliens appear?
- Why don't aliens appear?
- 1. There are no aliens.
- 2. There is no intelligent alien life...
- 3. Extraterrestrials do not use the technology
- 4. The aliens have a technology much more advanced than ours...
- 5. Extraterrestrial civilizations destroy themselves...
- 7. The Milky Way is very large
- 8. We have been looking for aliens for too little time...
- 9. The aliens are emitting little or no signal...
- 10. Aliens are avoiding us ( extraterrestrial )
- 11. The aliens are already here.
- Other Options: Extraterrestrial
- You may be interested:
Why don't aliens appear?
We live in a galaxy populated by hundreds of billions of suns. Earth-like planets would be billions...
Photo Aviv Perets in Pexels
So why in this vast space have we not (yet) had contact with extraterrestrial civilizations? Here are 11 possibilities to try to explain it.
Is there life elsewhere than on Earth or are we absolutely alone in the universe? This is a question that plagues humanity.
One would be inclined to think that there are other inhabited worlds, especially considering that there are hundreds of billions of stars in our galaxy - and hundreds of billions of galaxies in the universe - and that most of them are surrounded by planets?
In addition, 13 billion years have passed since the formation of the Milky Way, which, it is reasonable to think, leaves enough time for life to emerge on a multitude of planets.
So, as Fermi's famous paradox states, if there is life in other places and extraterrestrial civilizations (Carl Sagan predicted over 10,000), why haven't these beings come to us yet, "but where are they?" cried Enrico Fermi. Here are 11 possibilities that could explain this silence.
1. There are no aliens.
One possibility would be that we are absolutely (and desperately) alone in the whole universe. There would be no life anywhere else but on Earth.
All other worlds would be sterile, in short. Or life could have begun and then been annihilated by a cosmic event.
It's very possible, but it's hard to believe when we know, according to statistics, that there would be at least 40 billion inhabitable exoterrestrials in our galaxy alone. We prefer to think, on the contrary, that life is full of...
2. There is no intelligent alien life...
First of all, how do you define intelligent extraterrestrial life? Are we part of it?
After all, there may be life elsewhere, but it may be of a primitive nature... microbial, for example, like life that developed on Earth over billions of years.
Or plants and animals that may not (yet) have the ability to communicate beyond their planet (for Earth, this was the case until recently... on a geological scale).
3. Extraterrestrials do not use the technology
Extraterrestrial civilizations may not have the technology to communicate with other worlds.
Their development may have been very different from ours, so they may not be interested. Or they may not want to use it...
A video to promote the search for extraterrestrial civilizations in the universe. For a fairly accurate French translation, click on the rectangle with two horizontal bars at the bottom right. English subtitles should appear then, if not already the case.
If you then click on the nut to the right of the rectangle, you should see the phrase "Translate subtitles". Click to open the language selection menu, choose "English" and then click "OK". Breakthrough Initiative, YouTube
4. The aliens have a technology much more advanced than ours...
Alternatively, their technology could be much more advanced than ours. It is possible that they use modes of communication that we do not (yet) know and that are impossible to decipher.
5. Extraterrestrial civilizations destroy themselves...
When we look at the challenges facing humanity, particularly since the mid-20th century, it is reasonable to think that elsewhere, on other planets, so-called "intelligent" civilizations may have caused their own demise.
As far as we are concerned, the threats of collapse and/or extinction are multiple: nuclear fire at the end of a world conflict, severe global warming (famines, droughts, diseases, wars, collapse of democracies, etc.) combined with the sixth mass extinction, epidemics, etc.
However, we can hope that humanity will be able to avoid such issues...
6. The universe is a very dangerous environment - extraterrestrial
As we have seen above, a sixth mass extinction has begun on Earth.
While the latter is caused by our species, the former were all naturally caused by natural climate change and also... asteroids, as was the case with the previous biological crisis 65 million years ago.
Today, Homo sapiens knows that asteroids may one day endanger life on Earth, and he also knows that there are still other cosmic events that could end it, such as supernovas, quasars and also, near us, violent solar flares.
Therefore, it is possible that in other places, and often, life has not had time to develop.
Consider, for example, that red dwarfs around which rocky planets are often discovered (see Trappist 1 and its 7 planets) are obviously stars with a devastating mood.
Their repeated tantrums greatly reduce the chances that these planets are really habitable...
7. The Milky Way is very large
To explain why contact with an advanced extraterrestrial civilization has not yet taken place, another possibility is that our galaxy, and more importantly, the universe, is so large that it has not yet happened.
With a diameter of 100,000 light-years, we can imagine that the signals from the other end of the Milky Way take several millennia to arrive.
It all depends on the distance and also on when it was done. And then, let's not forget that there are hundreds of billions of stars...
We may simply not have been discovered (yet). We may not even be on their lists... The choice is immeasurable.
For example, if they sent a signal 100 years ago and are 10,000 light years away, then we will have to wait another 9,900 years.
The same problem for us, who are (also) looking for partners.
Based on images of space missions, the short film Vagabundos invites us to travel with human explorers from one world to another in our Solar System.
Will it soon be a reality? For a fairly accurate English translation, click on the rectangle with two horizontal bars at the bottom right.
English subtitles should appear then, if they are not already there. If you then click on the nut to the right of the rectangle, you should see the expression "Translate subtitles".
8. We have been looking for aliens for too little time...
Not a century has passed since humanity has been able to pick up the signals of an extraterrestrial civilization through radio telescopes.
Eighty years have passed, and the active search for signals really began only 60 years ago. This is an extremely short period of time compared to the age of the Milky Way.
Also, there are so many possible directions that we are not necessarily listening in the right place.
As Andrew Fain illustrates in an article in UniverseToday, it's a bit like looking up a friend's frequency on a CB that has about 250 billion channels...
9. The aliens are emitting little or no signal...
It is still possible that extraterrestrial civilizations are listening without sending strong signals, like us. We, on the other hand, are sending some to a few stars. Actually, we have not yet made ourselves known.
10. Aliens are avoiding us ( extraterrestrial )
We do not know their ways of thinking, of course. But, one can imagine that in fact they are not interested in us at all, nor is our planet.
Perhaps the conditions there are too hostile for them. Unless, too, we seem too dangerous and infrequent to them. Who can know? Perhaps we are frightening them!
It is also possible that they have a policy of non-interference with worlds like ours, populated by primitive beings... (like in Star Trek).
Perhaps they thought the contact would be too premature and deliberately chose, at least for the time being, to leave us alone, at least for the time being, to mind our own business and not interfere.
11. The aliens are already here.
Last but not least: maybe the Visitors are already here and we haven't even noticed them.
So, perhaps we are being watched discreetly. On the other hand, to be convinced that aliens have made deals with the governments of various countries, as the Web conspirators have done all along and at the top of their lungs (not without ridicule and not without knocking us out), seems more laughable than probable.
So, are we alone in the universe or not? In any case, according to several astronomers and exobiologists, we should soon find out if there is life elsewhere.
Researchers are confident that such discoveries will be made in the coming years.
On the one hand, within our Solar System, through probes and landers on Mars, Europe and/or Enceladus. And, beyond that, by studying the atmosphere of the rocky exoplanets that we encounter with increasing acuity...
Other Options: Extraterrestrial
In addition, you can look for great promotions in digital books or books about aliens, they can also be of half use in the online stores of Amazon, WalMart, Costco, Sams Club, Chedraui, Carrefour, aliexpress, alibaba or MercadoLibre.