According to one version of{{fact}} the [[big Bang theory|big bang theory]], the universe erupted into existence from nothing<ref>Discover magazine, in introducing the ideas of [[Alan Guth]], said, "The universe burst into something from absolutely nothing—zero, nada. And as it got bigger, it became filled with even more stuff that came from absolutely nowhere." Discover, April 2002.</ref> approximately 14 billion years ago, and has been expanding ever since. | According to one version of{{fact}} the [[big Bang theory|big bang theory]], the universe erupted into existence from nothing<ref>Discover magazine, in introducing the ideas of [[Alan Guth]], said, "The universe burst into something from absolutely nothing—zero, nada. And as it got bigger, it became filled with even more stuff that came from absolutely nowhere." Discover, April 2002.</ref> approximately 14 billion years ago, and has been expanding ever since. |