Some estimates put this at 600 million years, assuming Earth is not gradually moved to a trans-Neptunian orbit. http://en.wikipedia.org/wiki/Future_of_the_Eart

Some estimates put this at 600 million years, assuming Earth is not gradually moved to a trans-Neptunian orbit. http://en.wikipedia.org/wiki/Future_of_the_Earth#Solar_evolution http://en.wikipedia.org/wiki/Future_of_the_Earth#Solar_evolu... http://en.wikipedia.org/wiki/Timeline_of_the_far_future http://en.wikipedia.org/wiki/Timeline_of_the_far_future