Onyxmeth said:
What do you mean by Earth won't last forever? It's lasted an awfully long time already. Is something happening in the next couple hundred or thousand years to change this? |
As the sun runs out of hydrogen in its core, it will start to fuse helium which will increase its surface area and the amount of heat the Earth recieves from the sun. As Earth's interior cools, its iron core will solidify causing Earth's magnetic field to weaken, and as Earth's magnetic field weakens the planet will be subject to radiation while solar wind hastens the removal of the atmosphere.
Of course, this process is on the scale of millions of years, but why not get an early start?
