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The octopus, the mysterious creature that lives in the depths of the ocean, was once the focus of controversy. There are voices that it is not native to Earth, but may have genetic traces of extraterrestrial life. These unusual claims are not unfounded, but stem from a paper published in 2018 in the journal Advances in Biophysics and Molecular Biology titled "The Cause of the Cambrian Life Explosion – Earth or the Universe."
The authors of the paper, 33 scientists from different countries, came together to explore the causes of the Cambrian explosion of life.
During this period, about half a billion years ago, the variety and number of life on Earth suddenly surged, and scientists have not been able to explain the cause of this phenomenon. Before the Cambrian explosion of life, there was no fossil evidence of life on Earth, which led scientists to have many questions about the nature of life on Earth in that era.
The original paper argues an interesting theory that the cause of the Cambrian explosion of life may be related to interference from extraterrestrial viruses and bacteria. According to this theory, life on Earth may have been intervened by extraterrestrial life before it evolved. This view is not new in the scientific community, and it was proposed in the 70s of the 20th century, and is called the theory of biological origins, that is, life does not arise spontaneously on Earth, but is caused by the "seeding" of extraterrestrial life.
The article uses octopuses as an example to support this theory. The peculiarity of octopuses is that they are boneless, but they have considerable intelligence and surprising abilities, such as using tools, clever camouflage, and changing body color to blend in with the environment. More remarkably, octopuses have more than 33,000 protein-coding genes, more than humans. Even more unusual, they have the ability to edit RNA, bypassing DNA and directly affecting protein synthesis. This trait is very different from other organisms on Earth, and explains why octopuses seem to have not changed much in hundreds of millions of years, because they can adapt to their environment by editing RNA without long periods of time of evolution.
Further research also pointed out that, based on fossil evidence, single-celled organisms on Earth during the Cambrian period had difficulty evolving into advanced organisms with octopus-like intelligence in a fairly limited period of time. Combined, these arguments suggest that octopuses may have been part of extraterrestrial life, long before other life on Earth, meaning that the fertilized eggs of octopuses may have come to Earth with the arrival of alien asteroids.
This theory has led to deep thinking about the origin of life. If this view holds, then life on Earth, including humans, may carry genes from extraterrestrial life.
The numerous terrestrial planets in the Milky Way offer endless possibilities, and they may also be the birthplace of life. Some asteroids may host microbes, drift through the universe and be captured by other celestial bodies, where life will take root if these celestial bodies have the right conditions for survival.
For example, Earth has been hit many times in its long history by asteroids, which may contain frozen microbes or fertilized eggs. These microbes that descended on Earth may have been one of the key factors in the rapid evolution of life on Earth. However, the truth about the origin of life remains a huge mystery, and until this mystery is solved, we can only keep an open mind.
Perhaps life really developed only on Earth, or perhaps the Cambrian explosion of life was simply the result of the evolution of life on Earth itself. The reason for the sudden increase in life remains an unsolved mystery.
In any case, this imaginative theory allows us to re-examine life on Earth and gives us more room to think about the universe and the origin of life. Whether it's the impact of extraterrestrial life or Earth's own evolution, we have the opportunity to search for clues to life in deep space, an exploration that will continue to spark our curiosity about the mysteries of the universe.
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