Apocolyptic Earth

It is rumoured that,in the year of 5000, the sun will explode, and the earth, along with all other life, will die. If this apocalypse happened, say, 4886 years shy of its predicted date, in 2014, what would we do? Would technology be prepared enough for the end of the world? If it were, where would we take our giant spaceship, loaded with the "essentials" to survive? Where would we then call home? If, like in Beth Revis's "Across the Universe" trilogy, would we have already sent a fraction of our species to find that perfect place, our Centuari- Earth? I would be greatly surprised if this predicted apocalypse happened, and, if it happened, that we were prepared enough to survive it. I say we load up a starship and get the heck out of here now!!!