http://hubblesite.org/hubble_discoveries/dark_energy/de-fate_of_the_universe.php "With dark energy, the fate of the universe might go well beyond the Big Chill. In the strangest and most speculative scenario, as the universe expands ever faster, all of gravity's work will be undone. Clusters of galaxies will disband and separate. Then galaxies themselves will be torn apart. The solar system, stars, planets, and even molecules and atoms could be shredded by the ever-faster expansion. The universe that was born in a violent expansion could end with an even more violent expansion called the Big Rip." And then what? Does the universe recycle itself? Is there something after nothing? What remains of an atom is ripped apart?