How much time does planet Earth have left?

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The Earth will also perish
Nothing is forever. Finiteness is part of the existence of beings and things. There is no need for dramatization because the end is part of nature. And what about the planet Earth? When will it come to an end? How much time do humans have left in this part of the solar system?
The heat of the Sun can destroy us.
One of the causes of our extinction as a species is the effects of global warming, which has been going on for years. But even without human-caused warming, the Sun is increasing its radiation, eventually killing us. According to a 2014 article published in Science, there are two models for calculating this countdown: one is (more) pessimistic than the other.
In 150 million years, our existence will be over.
According to the calculations of researchers at Pennsylvania State University, led by scientist Ravi Kopparapu, who assumed a 6% increase in solar radiation, in 150 million years, only underwater life and a few resilient microbes, not including us humans, would be viable
600 to 700 million years to the end
The so-called “Kopparapu model” states that no form of life will be possible on Earth in 600 to 700 million years with rising temperatures.
A more optimistic view
According to Science, however, Eric Wolf and Owen Brian Toon at the National Center for Atmospheric Research have created a 3D model with much more accurate variables. The result: we still have 1.5 billion years to go. However, the habitable area for humans would be limited to a strip around the poles in a few million years.
One billion years is the most commonly cited number.
The number that is repeatedly cited between the two models above is 1 billion years is when we have left to live on planet Earth. Provided we do not accelerate our extinction.
Extinction by natural causes (and self-destruction).
Indeed, the Sun as a star is naturally warming, and its radiation is increasing. But humans, through ozone depletion, desertification, and other horrors, are contributing to changing the climate and making survival more difficult.
When will the Sun go out?
And then there’s the ultimate end. That will be when the Sun goes out: in about 4 billion years.
It will become a “red giant.
The Sun is a star with properties that will cause it to grow more oversized and more relaxed over time until it becomes what is known as a “red giant.”
The Sun is in the middle of its life.
The Sun was born a little over 4.57 billion years ago and would be halfway through its life.
The Earth is absorbed by the Sun
When the Sun becomes a “Red Giant,” one of the possibilities is that it will pull the Earth inward and absorb it.
There is another possibility.
Of course, there is another possibility, described in a fascinating way in Wikipedia. The Earth will not be absorbed, but this is the other scenario: “During this epoch, virtually all of the atmosphere will escape into space due to a strong solar wind and the temperature of the Earth’s surface, which is believed to be covered by an ocean of magma in which continents of metals and metal oxides and icebergs of refractory materials float.”
The Moon will explode
The Wikipedia entry on the “end of the Earth” also points to the possibility that when the Earth’s surface becomes lifeless magma, the Moon will explode into a thousand pieces and become something similar to Saturn’s rings.
The final fate of the Sun
After its “red giant” phase, astronomers believe the Sun would become a “white dwarf,” a nebula formed from a star that has “used up its fuel.”
“Like tears in the rain.
And so, we will be pure past millions of years from now. And all our memories will be lost, as the replicant said in “Blade Runner,” “like tears in the rain.”
There is still time to live.
However, humanity still has millions of years left, as long as it knows how to take care of the planet, keep it as a habitable space, and not perish in senseless wars.

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