Beetje fout: geen sterexplosie(s) zoals bij nova of supernova.
Maar dood gaan we toch als we niet ver genoeg zijn... en is Mars ver genoeg? ... en er is daar zeker al niet genoeg bruikbaar water om van te leven ...
In 4-5 billion years the Hydrogen fuel in the sun's core will have all been converted to helium. The core will contract and heat up, and upon reaching 100 million degrees Celsius, Helium fusion will begin. The outer layers of the sun will expand to about Earth's orbit, becoming a red giant, but the loss of mass early in this phase will mean that Earth will probably move to a wider orbit, and not be engulfed as Mercury would be and Venus would probably be. Although the expansion cools the sun somewhat and makes it emit redder light, the heat emitted will be much higher than today, and despite being further out, Earth's oceans will boil away, and become like Venus now, until the atmosphere, too, is lost to space.
The red giant phase will be short lived, and eventually the outer layers will puff away due to thermal pulsations, forming a planetary nebula, leaving the core a tiny white dwarf that will slowly cool and dim.
There will be no nova here, but the outlook for Earth is not good. Fortunately, we'll all be extinct long before the red giant phase.
. Dat terraformen is overigens geen rocket science, veel van die zaken worden nu al toegepast om onvruchtbare gebieden te converteren. China is bvb een kampioen in terraforming. Het is gewoon op (fameus) grotere schaal nu.
