Formation and evolution of the Solar System apart by tidal interactions. Afterwards, all that will remain of the Sun is a white dwarf, an extraordinarily dense object, 54% its original mass but only the size of the Earth. Initially, this white dwarf may be 100 times as luminous as the Sun is now. It will consist entirely of degenerate carbon and oxygen, but will never reach temperatures hot enough to fuse these elements. Thus the white dwarf Sun will gradually cool, growing dimmer and dimmer. As the Sun dies, its gravitational pull on the orbiting bodies such as planets, comets and asteroids will weaken due to its
East of the Sun and West of the Moon East of the Sun and West of the Moon "East of the Sun and West of the Moon" () is a Norwegian fairy tale. "East of the Sun and West of the Moon" was collected by Peter Christen Asbjørnsen and Jørgen Moe. It is Aarne–Thompson type 425A, the search for the lost husband; other tales of this type include "Black Bull of Norroway", "The King of Love", "The Brown Bear of Norway", "The Daughter of the Skies", "The Enchanted Pig", "The Tale of the Hoodie", "Master Semolina", "The Sprig of Rosemary", "The Enchanted Snake", and "White-Bear-King-Valemon". The Swedish version is