"The end of the world" Topic

"The end of the world may come slowly, but it´s inevitable. Our sun, exhausting the hydrogen-fuel of the core, will successively burn the outer layers and doing so becoming hotter and expanding in size. In estimated 7,59 billion years a red giant will engulf the earth – or whatever still be left over of the once blue planet.

Already in 1,6 billion years the hotter sun will evaporate the oceans, and plate tectonics, whiteout enough water acting as lubricant in subduction zones, will stop. Without plate tectonics erosion will become a dominant factor. The increased radiation of sun will modify the chemical composition of earth´s atmosphere. The light hydrogen will also "evaporate" into space and the heavy oxygen will accumulate on the surface of earth. In this denser atmosphere rare, but strong, rainstorms will cause large mudflows in the last mountain ranges. Mountains will be eroded and basins filled with sediments and earth´s surface will become a plain desert. The iron in the sediments will react with the oxygen and earth´s colors will change into a permanent red, like planet Mars today. In the dense atmosphere temperatures will still rise, dissolving gypsum and other sulphur-bearing rocks. The free sulphur will react with the traces of vapor left in the atmosphere and it will rain sulphuric acid from earth´s sky.

In 7,5 billion years the expanding sun will gravitationally lock earth and one side will now face always towards sun. In the sunny side the temperature of earth´s surface will rise to 2.200°C, on the dark side of earth the temperature, without an isolating atmosphere, could plunge to -240°. Basalt, one of the most common rocks on earth, melts at 1.100-1.200°C, on the sunshine side it will be so hot that a molten magma-ocean forms… and it will start to evaporate. Between the hot side and cool side of earth the evaporated elements, like iron and silica, will form rain and like today snowflakes form a landscape composed of snow, iron- sodium-, magnesium- and potassium-flakes will form an eerie landscape composed of these elements. Rock-glaciers will descend from the mountains to the shores and icebergs of rock will float into the magma-ocean…"
Full article here
link

Amicalement
Armand

Well, I guess that settles the question about where to hold Historicon in the future.

Matthew

Thank you for brightening up my day!

Only 1.6 billion years? What are we going to do? I'll be 1,599,999,039 years old. I'll never get anything done!

1.6 Billion? Well I now I won't be able to sleep tonight worrying.

I suspect that big new asteroid the Russians found, that crosses our orbit every three years may be a lot more likely to cause our demise.

It's about 370 meters across, apparently.

Wow, maybe I do have enough time to finish painting all my lead!

Nah…

A little later, in 4 billion years, there will be no Milky Way galaxy…when it collides with Andromeda
link

Why did I bother to have children?

I imagine it was more of a bother for your wife.

I still won't have finished painting my lead pile!

Tally Ho!

Henry Martini, I believe you are right!

I feel fine.

But, you are half-human, Spock, the computer knows that….

My daughter turned 16 today. Saturday we go in to get her Driver Permit. The world or at least some of its pieces may be coming to an end sooner than they predict.

So long and thanks for the fish.