Ever since people have learned to think, many questions have come up in people. Many questions come to mind about this universe, star, galaxy. Humans know about this universe, star, galaxy. But a question that has been on people’s minds for a long time is, how did man came to be?
Current science is very advanced. We have answered many questions. But to date, we have found none correct answer to this question. Although many religions say that God created man. Although many believe this. But modern people believe in science. To date, scientists could not answer this question. But there are many theories, hypotheses about this.
One of the most reliable theories was Panspermia.
According to this theory, there was no life on earth before. Life on earth came from outside.
Which is divided into three parts -
1 Litho panspermia
2 Ballistic Panspermia
3 Directed Panspermia
● Litho panspermia: - According to which there was no life on earth before. From deep space, an unknown meteor or comet has come to our earth. Because of the hard conditions in space, life cannot develop there. Then it comes from a habitable planet, and then it turns from a tiny creature into a complex creature.
● Ballistic Panspermia: - Which is the most popular and the most acceptable. According to this hypothesis, a meteorite came to our earth from an object in our solar system. Although no direct evidence from this hypothesis. But scientists have a lot of indirect evidence.
Evidence - 1: About 4 billion years ago today, when the bombing period on Earth ended, it means that meteorites from space stopped colliding with our Earth. According to scientists, life on Earth began just then.
Evidence - 2: Scientists are searching for water on Mars. According to scientists, the water of this planet was in a liquid state many years ago.
Earth and Mars are born in the same way. And the weather on these two planets was almost the same. Maybe the animals on Mars came to our earth from a meteorite. In 1984, scientists discovered a meteorite from Antarctica that came from the planet Mars.
Examine this meteorite well. In it, scientists see they have formed a magnetic chain in that meteorite. However, scientists could not prove whether any micro-organisms created it or.
Scientists have so far found about 4 trillion meteorites that came from Mars. The reason for this is the distance between Earth and Mars.
Proof-3 life can only be on earth. But that’s not right. There are many places in our world where it is very difficult to live a normal life. Scientists have discovered many bacteria in those places where they live. Scientists are doing many such experiments. Were some bacteria left in space. According to scientists, these bacteria can survive in space for up to 6 years. And these bacteria can protect themselves from the radiation of the sun.
From which it understood that maybe some such bacteria came to our world in the past.
● Directed Panspermia: - According to this hypothesis, any advanced civilization has created life on other planets. Although scientists do not accept this hypothesis that way.
These hypotheses may provide evidence of how to treat life on our Earth. But these hypotheses do not answer our crucial question. How are animals created in our universe?
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