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When did the Earth become viable? Study resolves controversy



A recent British study concluded that oxygen, which is the secret of life on Earth, is a modern component of the atmosphere, which means that the Earth is habitable after a long period of its origin.


The study, conducted by an international team led by the University of Leeds, which includes researchers from the University of California, Riverside, Harvard in the United States and the University of Southern Denmark, was published in nature.


“The Great Oxygenation Event fundamentally changed the Earth’s environment and habitable, and this early period of oxygenation was thought to have occurred about 2.43 to 2.32 billion years ago, but our research shows that atmospheric oxygenation was unstable over 200 million years,”said the study’s lead researcher, Simon Bolton, from the University of Leeds.


It was the first time that oxygen was significantly in the atmosphere, about 2.43 billion years ago, and this marks the beginning of the Great Oxygenation Event, a pivotal period in Earth’s history.

The Earth was about two billion years old when oxygen appeared, and the Earth was inhabited at the time, but by unicellular organisms.


Although the Great Oxygenation Event produced oxygen levels that are still much lower than they are today, it significantly changed the chemical composition of the planet’s surface and paved the way for the subsequent course of biological evolution on Earth.


By analyzing rocks from South Africa, which were deposited in the ocean at the time of the Great Oxygenation, the researchers discovered that early atmospheric oxygenation was short-lived, and oxygen did not become a permanent feature of the atmosphere until much later.


Ashraf Latif Tadros, head of the astronomy department at the Egyptian National Institute for astronomical and Geophysical Research, believes that “the subject has multiple, overlapping and difficult to separate aspects, and its roots are not only astronomical, but have to do with microorganisms or microbial organisms that have existed on Earth millions of years ago, and organic chemistry that has to do with oxygen production

“We know that the vegetable kingdom (the forests on the planet) contain a huge number of trees, and they are largely responsible for producing huge amounts of oxygen in the atmosphere, on the other hand we also know that water occupies 72% of the area of the Earth, and water contains hydrogen and oxygen.. Is the amount of oxygen on Earth responsible for the formation of so much water (seas and oceans) or vice versa?!”.

The study also provided an explanation for some of the most extreme, the effect of climate rings on Earth, when the planet was repeatedly covered with ice.


“These findings help explain four large-scale ice pools that occurred in conjunction with the Great Oxidation Event, some of which may have covered the entire Earth with ice for millions of years,”says study co-author from UC Riverside Andre Becker.

“Our new data show that the permanent rise of oxygen actually occurred after and not before the last major glaciation of this period, which was previously a major mystery in our understanding of the links between early atmospheric oxygenation and extreme climate instability,”Becker adds in a report published on the University’s website in conjunction with the publication of the study.


There is an assumption that water was formed by comets millions of years ago, so scientists are sending unmanned vehicles to descend on comets and analyze them, which is what we call astrochemistry, which NASA is increasingly interested in in recent years, but there are other studies that assume that water is the cause of the increase in oxygen on Earth, which scientists seek to resolve through research and studies.”



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