SCIENCE

The earth is a habitat for all species billions of years from now

Almost anywhere on Earth, you see life in the air, water, and even deep underground.

However, we do know that there have been mass extinctions in the past, taking away most of life on Earth. Does this cause us concern?

Climate support life in 3 – 4 billion years?

Since life formed and spread on the blue planet, there hasn’t been any event that completely eradicated life. However, this is still an interesting thing because despite some supposed serious events, the Earth’s climate has remained relatively stable for 3 – 4 billion years, but probably due to … luck.

This is considered a strange phenomenon because we know that stars like the Sun get hotter as they age and the Sun has long been about 30% dimmer. That means Ancient Earth should have been a frozen solid, or assuming it was sand, perhaps the Earth is boiling right now. Reality did not work out like this and this is the mystery.

This is known as the “Faint Young Sun Paradox” and leads many scientists to assume that Earth has a kind of thermostat, a set of conditions that tend to rebalance a system out of a state unstable so that it is not too hot or too cold. This would be a negative feedback system, if a condition arises that causes the Earth to heat up, things will change in a way to cool it down again.

Besides, if you release too much carbon dioxide into the air, the oceans will heat up, this releases more CO2 and you will have a feedback loop that ends badly like we are witnessing today. . If there is too little CO2 in the air, the Earth will freeze.

Due to randomness or mechanism?

To find out, Professor Toby Tyrrell exploited the power of the supercomputer Iridis facility of the University of Southampton (UK) and created simulations of 100,000 planets! In it, each planet is provided with a set of random climatic responses, some negative and some positive, while monitoring their temperature over a hypothetical 3 billion years and zero period. There are other variables to be simulated.

For the sake of simplicity, he just wanted to see if a planet could hold the temperature that life could last for as long as Earth.

It is clear that the simulated responses are not based on real responses such as CO2 in the air, instead he assigns the planets random mathematical feedback, strict arithmetic situations to see. what happened. Each planetary simulation was then run 100 times, with variations in it slightly changed, to see what was going on with the temperatures.

The point here is not to create a full climate simulation but just to see how big a role opportunities play in a planet’s viability. He is testing two hypotheses. The first is that feedback has no effect, so everything depends on random fluctuations.

That is only a pure chance if a planet has been in a habitable zone for billions of years. The second is that having feedback, whether negative or positive, guarantees success or failure and it is likely that it plays no role at all.

In other words, he hopes to see if climate feedback really keeps the Earth alive for so long or just luck. A planet is considered viable if its temperature remains stable for more than 3 billion years.

Looking at the range of results and how they happened, his conclusion is that both random feedback and chance play a role in the planet’s ability to maintain the temperature of life for all species. While the success rates of the samples vary, varying by factors in 100 trials still support the idea that both mechanism and opportunity play an important role above.

However, whether this applies to our Earth or not is still something that needs more research because these are just simple experiments. We don’t really know how strong and resilient the Earth is, but it has survived to this day partly out of luck.

Interestingly, out of 100,000 planets, only 9% succeed at least once. Some planets succeed 2 times, some three times … In fact, considering all 100,000 planets, we all have 1 to 100 successful operations.

However, only 1 planet has succeeded 100 times in 100 trials. It’s a powerful planet, showing that nothing can stop it from being a nice place to live (at least in temperature).

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