What our Sun will eventually become at the end of its life?

Once all the helium disappears, the forces of gravity will take over, and the sun will shrink into a white dwarf. All the outer material will dissipate, leaving behind a planetary nebula.

How long would it take for us to die if there was no sun?

A relatively simple calculation would show that the Earth’s surface temperature would drop by a factor of two about every two months if the Sun were shut off. The current mean temperature of the Earth’s surface is about 300 Kelvin (K). This means in two months the temperature would drop to 150K, and 75K in four months.

Will the Sun burn out?

In about 5.5 billion years the Sun will run out of hydrogen and begin expanding as it burns helium. It will swap from being a yellow giant to a red giant, expanding beyond the orbit of Mars and vaporizing Earth—including the atoms that make-up you.

What will happen to life on Earth when the Sun dies?

Life on the planet will run into trouble well before the planet itself disintegrates. Even before the sun finishes burning hydrogen, it will have changed from its present state. The sun has been increasing its brightness by about 10\% every billion years it spends burning hydrogen.

What happens to the sun’s energy as it ages?

For about 2 billion years the sun will fuse helium into carbon and some oxygen, but there’s less energy in those reactions. Once the last bits of helium turn into heavier elements, there’s no more radiant energy to keep the sun puffed up against it’s own weight. The core will shrink into a white dwarf.

When will the Earth become uninhabitable from the Sun?

But the Earth will become uninhabitable much sooner than that. After about a billion years the sun will become hot enough to boil our oceans. The sun is currently classified as a “main sequence” star. This means that it is in the most stable part of its life, converting the hydrogen present in its core into helium.

What will happen to the Earth four billion years from now?

Four billion years from now, the increase in the Earth’s surface temperature will cause a runaway greenhouse effect, heating the surface enough to melt it. By that point, all life on the Earth will be extinct. The most probable fate of the planet is absorption by the Sun in about 7.5 billion years,…