How long can we live if the Sun dies?

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.

Why will humans go extinct?

Human extinction is the hypothetical end of the human species due to either natural causes such as population decline due to sub-replacement fertility, an asteroid impact or large-scale volcanism, or anthropogenic (human) causes, also known as omnicide.

What will happen to our Solar System after the Sun dies?

Mercury, Venus and possibly the Earth will have been burnt to a cinder by the Sun as it expands in its old age, so the rocky, interior planets will have gone. After those initial stages prior to death, the outer atmosphere of the Sun will continue an outward journey and eventually pass beyond the boundaries of the Solar System.

What would Earth be like without the Sun?

The answer is No, the Earth would not remain in any recognizable form without the Sun. There would still be a husk of a dead planet with a small amount of energy coming from the residual heat of the core which might be able to sustain chemosynthetic life in small colonies.

Will the Sun ever burn itself out?

Yes, the sun will eventually burn out. But not for a long, long time. The sun has used up about half of its hydrogen fuel in the last 4.6 billion years, since its birth. It still has enough hydrogen to last about another 5 billion years.

What will eventually happen to the Sun?

About 5.4 billion years from now, the sun will have exhausted all of its hydrogen. The sun’s core will get really hot and dense, thus shrinking; however, the outer region of the sun will expand and grow . It could expand as far out as Mercury, Venus, and maybe even Earth – vaporizing all three rocky planets.