Ultimately, this earth will be incinerated by the Sun...Just depends on how much more Helium ash is deposited on the Sun's core causing the Sun to expand and burn so much hotter...Some say 4 billion years from now - some say something else - It doesn't really matter 'cuz those left to witness the Sun's suface at the distance of the Moon will soon be nothing more than sub-atomic particles, if even that........Lets "migrate" this topic to anoher sub-fora, say, community chat with thread title "Solar Expansion/Overheating".