Hello, this is a very interesting topic! I have also pondered why humans have not found any traces of aliens until now. Let's take a sip of hot tea and discuss this cosmic puzzle together.
First of all, we have to admit that the universe is really vast! Take the Milky Way galaxy that we are familiar with, and there are about 400 billion stars in that sea of stars. If you imagine that there were only a few intelligent civilizations around only a few stars in a million, there would be thousands of them! But why can't we find any clues? It's really incomprehensible.
But don't forget, even at the speed of light, millions of years are enough time to orbit the Milky Way tens of thousands of times. How can we say that we have not explored even a small corner of the galaxy in the insignificant history of this insignificant idea?
Besides, scientists are not out of the question. If you look at the past few decades, radio telescopes have been searching for "distress signals" from outside the sky day and night, but so far there has been no response at all. I've often wondered if it's really the only earth that has given birth to intelligent life.
Speaking of which, you might be asking about the famous Fermi paradox. Indeed, this master of physics wondered back then, since there are so many stars in the universe, then theoretically a large number of intelligent civilizations must be born. But why haven't we found even the slightest trace of it so far? What a big puzzle that people can't figure out!
But did you know that a professor later came up with an even more terrifying theory to explain the Fermi paradox? He said that perhaps the reason why aliens do not exist is that in the entire process of cosmic evolution, there is actually a so-called "big filter" that filters out the opportunities of most civilizations in the process of evolution!
If you think about it, let's take our planet as an example. If the asteroid hadn't hit the Earth and the meteorite impact of the dinosaur era, there really wouldn't be anything now. Not to mention extreme natural disasters, solar flares, and even some destructive weapons invented by mankind themselves, these "filters" have stifled the hope of the development of many civilizations in the cradle!
It is precisely because of the existence of such an invisible web that the entire universe seems so empty and desolate. Because countless civilizations have been ruthlessly filtered out by these catastrophic events at the beginning of their birth, the probability of surviving and evolving into intelligent creatures is too slim. So we felt as if there was total silence around us, and there were no aliens at all.
But it's hard to say, what if we humans are just lucky? Maybe one day in the future, a signal of an alien civilization will suddenly come from the vast universe. At that time, we will be able to truly affirm that human beings are not the only intelligent beings in the entire vast universe.
That's exciting! There will definitely be a large number of science fiction fans who will speculate about the shape and lifestyle of extraterrestrial civilizations. Either way, I'm sure it will be the most exhilarating moment in human history, marking the beginning of a new chapter in our contact with extraterrestrials!
Of course, this can also be an extremely small probability event. After all, our understanding of the rules of the entire universe is too limited, and many things cannot be explained at all. But it doesn't matter, it is precisely because of the existence of these unsolved mysteries that our species can never stop exploring and pursuing. Who knows, maybe one day humanity will be able to uncover more mysteries of the universe?
So in any case, I think it's very important for us to keep a curious and uplifting heart. Although the existence of aliens is still shrouded in fog, as long as we do not give up exploration and pursuit, the mystery will be solved one day. Let's continue to move forward hand in hand, and look forward to meeting our extraterrestrial neighbors in our lifetime!
Disclaimer: The information in this article comes from the Internet, which is not guaranteed to be completely correct and is for reference only.