Why have not we come in contact with aliens fermi paradox explained

Many space scientists believe that life can also exist outside the earth. Recently, space scientists have discovered some gases on an exoplanet that are formed during a biological process. And these gases are also made on earth. This has increased the possibility of life outside the Earth than before. But at the same time, a question arises that if there are really creatures or aliens on a planet outside the Earth, then why not come in contact with us till now? Scientists have given the reason for this.

In 1950, Enrico Fermi asked other famous physicists including Edward Teller during lunch, “Where are everyone?” This dilemma was named ‘Fermi’s Paradox’. Jason Wright to AFP told That is “it’s a game of number.” The Milky Way galaxy is about 10 billion years old and has more than 100 billion stars. This shows that the number of living planets in our galaxy alone is very high.

The K2-18B is also involved in this, about which scientists have made a shocking discovery on Thursday. Chemical fingerprints of some gases have been found on exoplanet K2-18B. The gases whose marks are found there, those gases are made only during a biological process on the earth. The names of these gases are Dimithyl sulfide, or DMS, and Dimithyl Dyulfide, or DMDS. These gases are made by living beings on Earth, mainly by microorganisms. Which includes marine phytoplankton -algae. Researchers said that this shows that the planet may be filled with microorganic life.

So why not contact aliens yet? According to a 2015 book, 75 fictional solutions have been proposed so far for ‘Fermi’s contradiction’, or even more.

Are we absolutely alone in the universe?
The first possibility says that aliens did not contact because they are not present. That is, we are alone in this universe. But many scientists do not agree with this.

87% of the 1000 scientists of the related subjects involved in the survey by Nature Astronomy believe that at least a basic form of life is definitely present outside the Earth. 67% believe that aliens exist outside, and they are much more intelligent.

Great filter
Another theory says that there is definitely a big filter in the universe which is stopping life somewhere. Or perhaps there is a hurdle that prevent civilizations from moving beyond a certain point.

Are we in a Zoo?
Under the ‘Zoo Hypothesis’, technically advanced aliens will leave humans alone and see us from a distance, such as zoo animals do.

The universe is a dense black forest?
This theory says that the universe is a dense black forest where no one wants to tell their identity. If they do this, then someone else will come and end them.

Some scientists say that aliens can send messages using all types of unknown technology, so the galaxy may not be as calm as we think. Overall, aliens are a secret. Scientists are constantly trying to decode any signal coming from outside the Earth. There is a device that can catch the signal coming from outside.