That is a great answer Arti.
Addzyy69, i wouldnt be too worried about it, hopefully whom ever is around then, humans or whatever we turn into, will be long gone from the planet.
When the sun is burning out it will swell up and engulf the earth. Actually we will not be able to live on the earth for a long time prior as the sun will become so hot that it will boil earths water off. So we need to be gone long before the sun dies.