The Earth’s life is set to end much sooner than expected: a new study reveals
14 April 14:31
Using NASA data, scientists have predicted when Earth will cease to be habitable in the form we are accustomed to. According to a new study, the planet’s atmosphere will lose its oxygen in about a billion years, which means that life on Earth will disappear sooner than previously thought. The study, published in the journal Nature Geoscience, shows that the oxygen-rich atmosphere we are accustomed to is not stable forever, reports "Komersant Ukrainian" citing the Daily Star.
When Earth Will Become Uninhabitable
According to new calculations, critical changes in Earth’s atmosphere could occur in about a billion years. The article notes that previous estimates were more optimistic and assumed that the planet would remain habitable for about two billion years. However, the new study indicates that this timeframe is significantly shorter.
Specifically, we are talking about the period around the year 100,000,2021, when Earth’s atmosphere will no longer be able to support modern life.
Why will oxygen disappear from Earth?
The study’s authors explain that the cause of the impending catastrophe is linked to the Sun. Over the next billion years, the Sun will gradually become brighter and hotter. As a result, water from Earth’s surface will evaporate more rapidly and rise into the upper layers of the atmosphere. As a result of this process, the oxygen-rich atmosphere, on which life depends, will begin to break down.
In other words, the problem lies not in the sudden disappearance of oxygen, but in long-term cosmic changes that will make Earth increasingly unsuitable for complex life forms.
Why Earth’s oxygen is not eternal
The study emphasizes that Earth’s current atmosphere, with approximately 20% oxygen, is not stable forever. Although today the photosynthetic biosphere maintains large amounts of oxygen in the atmosphere and ocean, this does not guarantee that such a system will persist forever.
Scientists emphasize that the mere existence of oxygen-producing plants and microorganisms does not automatically guarantee the preservation of a highly oxygen-rich atmosphere in the distant future.
What Is the Great Oxygenation Event and Why Is It Important
About 2.5 billion years ago, Earth’s atmosphere contained almost no oxygen. The situation changed after the emergence of life forms that began producing oxygen as a byproduct. This triggered the so-called Great Oxygenation Event, which completely transformed the planet’s atmosphere and created a biosphere suitable for complex life.
That is why scientists emphasize: an oxygen-rich atmosphere is not the Earth’s original state, nor is it guaranteed to be permanent; it is merely one stage in its long history.
What will become of humanity in such a distant future
The article notes that humanity shouldn’t worry about these changes right now, since we’re talking about events that will occur a billion years from now. However, the authors suggest that if civilization can overcome its own current threats—including climate change, nuclear risks, and other challenges—then the people of the future may find a way to either fix the situation or leave Earth.
In other words, in the long term, humanity will likely have to think not only about preserving the planet but also about searching for new worlds to inhabit.
How this relates to the search for life on other planets
Scientists also point out that studying Earth’s future could aid in the search for life beyond the Solar System. The article mentions NASA’s LUVOIR initiative, which aims to help observe similar atmospheric changes on distant planets. This could allow scientists to detect not only the emergence but also the extinction of life on other worlds.
In this way, Earth’s future could serve as a model for understanding how life emerges and disappears in the universe.
