How fast would we die if the sun went out?
You might be able to survive for a bit longer than you think.
If the sun suddenly blinked out of existence, you’d have nothing to worry about — for the first eight minutes, anyway.
After that, all hell would likely break loose.
Still, it wouldn’t be the instantaneous end to life on Earth that you might think..
How long would humans survive without the 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.
What would happen to Earth without the sun?
Nothing is more important to us on Earth than the Sun. Without the Sun’s heat and light, the Earth would be a lifeless ball of ice-coated rock. The Sun warms our seas, stirs our atmosphere, generates our weather patterns, and gives energy to the growing green plants that provide the food and oxygen for life on Earth.
How cold would it be without the sun?
Most small plants would die within a matter of days, but that’s not what we should be worried about: Earth’s average surface temperature would drop to 32 degrees Fahrenheit after the first week, and then to negative 150 degrees Fahrenheit by the end of the first year, Stevens says.
Will the earth last forever?
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.