AURORA—… A mythical world, supposedly inhabited in primordial times, during the dawn of interstellar travel. It is thought by some to be the perhaps equally mythical “world of origin” of humanity and to be another name for “Earth.” The people of the Mycogen (q.v.) Sector of ancient Trantor reportedly held themselves to be descended from the inhabitants of Aurora and made that tenet central to their system of beliefs, concerning which almost nothing else is known …

ENCYCLOPEDIA GALACTICA