Theories portray the worries about aliens

Do you know why scientists from the past to the present always poured their enthusiasm and effort to find out alien life?

That is to find the answer to the worry that one day, humanity will perish due to the invasion of extraterrestrial forces. However, after a hundred years of constant searching, we still cannot find what we have always wanted .

From the paradox of Fermi .

The universe was formed billions of years ago and Earth is a small planet in it. This is why most of us believe in the existence of aliens or forces from outside the universe.

The vast vast universe does exist other Earths?

With that belief, mankind has been devoted for hundreds of years with the desire to find a sign of extraterrestrials.

However, an Italian scientist, Enrico Fermi, proved blindness in human perception with the paradox bearing his name.

Humans have never given up their dreams of reaching the stars to find other civilizations .

He pointed out a great contradiction between estimates of the viability of extraterrestrial civilizations, along with the lack of evidence, or the connection with those civilizations. From here, many people wonder why we have yet to find a scientific proof that proves the existence of extraterrestrial forces.

. but the signals we broadcast still have no response.

Specifically, if the Earth is a typical and popular planet in the universe, life beyond Earth must exist. So why doesn't our spacecraft or satellite detect anything?

On the other hand, if civilizations other than Earth develop, more advanced, why can't we detect their radio signals?

. to Rare Earth Theory and the Great Filter .

There have been many attempts to solve the Fermi Paradox, which is more convincing and famous than the rare Earth theory and the Great Filter theory.

Is Earth the only planet in the universe that has life?

Rare Earth Theory was first presented by geologist Peter Ward and biologist Donald E. Brownlee.

These two experts believe that, in order to appear as multicellular life as complex as Earth now needs an almost impossible combination of astronomical, geological and context conditions.

Aliens may also only appear in fictional movies!

This theory asserts that we are extremely special and unique creatures. What we see on Earth in the solar system and in the Milky Way is the special convergence of unusual and random elements, creating complex life as it needs to form.

In other words, the Earth belongs to the 'rare hard to find' planet in the universe. Therefore, not finding alien signs is understandable and even, there are no extraterrestrial aliens.

It will be difficult to find a second planet with the same good conditions for life as Earth.

Meanwhile, the Great Filter theory was initiated in 1998 by Robin Hanson, saying that all advanced civilizations self-destruct before they have the capacity to invade space because of the inexorable selection process. reverse.

Therefore, other extraterrestrial civilizations, if any, existed or were about to self-destruct before we could find them.

Every extraterrestrial civilization may have existed before self-destruction.

According to him, people may have overcome this filter in the past, or may face them in the future.

And is it that Earth is the only planet that survived that crisis?

Therefore, humans may not escape the indefinite 'Apocalypse' and to overcome it, there is only a way to search for and control all the causes that can lead to the destruction of the Earth like collisions. meteorites, natural disasters, nuclear war . only.