There are about 100 billion stars in the Milky Way, and you probably wonder why it is hard for all scientists to find alien life. The presence of the alien is still one of the big questions in science. They could discover the entire new solar systems or stars that have planets, but how come they could not find any alien?
These problem scientists called Fermi Paradox. The basic idea is the number of planets combined with the amount of time our galaxy has been around. It means there are thousands of civilizations, and they are getting more advanced than us. But, there is no evidence of a single one, yet. Here are the 10 most interesting reasons you should know. space science to learn science and space nee science

10. We’re Alone

The big reason we have never seen any alien life is simply it does not exist. It is about 14 billion years or more when it comes to the universe’s existence. Here, on Earth, we are completely alone. This solution is known as the Rare Earth Hypothesis. It does not a matter how many planets there are, how much the time has passed, but the creation of life is a rare event. space science to learn science and space nee science
There are three versions of this theory. One, life on Earth is unique. One where life is common but multicellular life is unique to Earth. And the last is where the complex life is common, but intelligent life is only o Earth. They talk the same thing that we will never meet the galactic neighbors since they do not exist. space science to learn science and space nee science

9. Keep Killing Themselves Off

In this point, the assumption is we are not special and the intelligent life is common. Hundreds or thousands of civilizations have reached our technology level and even surpassed it. Here, you assume that there are other species right now that is about 50 or 100 years ahead or behind us. Why cannot see them? space science to learn science and space nee science
Probably, they are screwed. It can be because an impassable barrier all life hits at a certain tech level. It is known as the Great Filter. This idea is that something destroys all civilizations before they go to interstellar. It could be climate change, nuclear war, or others. space science to learn science and space nee science

8. We’re in a Giant Space Zoo

This point is popular as the Zoo Hypothesis that explains away the galaxy’s radio silence. It suggests that we have been isolated. The most demeaning version has a space squid watching us and even laughing. Meanwhile, the less demeaning version has the galaxy’s aliens calling us. space science to learn science and space nee science

7. Advanced Civilizations

What if you think that there is a species, and they do not want to get out of their world? For example, you are living in a new age with good technology to improve your life. At that point, leaving your home planet is something difficult or even pointless. With a lot of fun and crazy things, you would never want to leave your house. So, it is possible for alien that they are too busy living in their world. They have no time to contact us. They do anything, have whatever or adventures they like. space science to learn science and space nee science

6. We’re in a Simulation

This theory can be bad news for you. Perhaps you are living in a simulation. Simulation Theory assumes that technology will be much better and more advanced until we reach a post-human level. Programmer we call God is able to create the entire universes populated with the digital civilizations so advanced in how they think and act they will be alive. At that time, these post-humans would start using the simulations routinely, leading to the presence of quadrillions more digital souls have existed in reality. space science to learn science and space nee science
Probably, alien life may be so common. So, some far-future human made a simulation program of human history that contains no alien civilizations. What they want is to see how it would have affected our development. We are alone here because there are no aliens to add to this simulation. space science to learn science and space nee science

5. Aliens are Aware of Us and Will Kill Us Shortly

This theory is quite chilling. It is possible for the intelligent life to evolve at any time, and advance to the stage where it spans the entire galaxy. What if this first happened billions of years ago? They then realized not to allow other civilizations to reach their level. Otherwise, there will be competition for resources. Therefore, they will exterminate them. Why we have not yet been killed? They may consider us so laughably low-tech competitor. Killing us will not justify the time or resources to take. space science to learn science and space nee science

4. We’re Too Primitive (or Ignorant)

What if on the other side of the planet, there was a small colony of a human at our current tech level? Perhaps we are too primitive did not notice they were there. It was because their signals would come in stuff like radio or Wi-Fi. space science to learn science and space nee science
You can imagine the presence of another tiny colony of post-humans on the planet with their technology ten million years more advanced than modern humans. These modern humans will never notice the clues. So, aliens could be around us and try for communicating all the time. But, they have highly advanced technology so we cannot detect them. space science to learn science and space nee science

3. We Live in the Middle of Nowhere

The reason why we never detected any intelligent life near us could be because there was no one living near us. It could be because we live in a region that is unfashionable. It could be that everyone else has moved out of the inner system and then migrated to the galactic burbs. So, it is possible to say that alien may think we are living in the wrong place, so therefore they never visited us. space science to learn science and space nee science

2. The Galaxy Has Only Just Become Capable of Housing Intelligent Life

Gamma-ray bursts in the galaxy are decreasing lately. This fact creates an interesting hypothesis. For example, the average time when gamma rays blasted the part of the galaxy can be long enough to support intelligent life to form. Maybe, there are no signs of advanced civilizations. Simply, it is because we are one of the dozens that only cropped long enough to make us go to the interstellar. On the other words, probably, there were thousands of millions of planets out of there gave rise to intelligent life but they wiped out when it was around the Stone Age. If that is true, it means we can notice each other at once in the future with the dead planets covered in amazing ruins. space science to learn science and space nee science

1. We’re Simply too Boring to Deal With

There may be a big reason why alien civilizations never contacted us. It could be our neighbors are ignoring us. They like putting us in the galactic wildlife park. For them, we could be too boring to deal with. It is possible if alien life is similar to life on Earth. On the other hands, it could be completely different. They might discover everything about us so horrifying so they refuse to even acknowledge us. Other than that, we might be boring, with all the lower-tech aliens to explore. We just like wasting their time and therefore they ignore us. space science to learn science and space nee science