Editing Cyclic model (section)

{{Short description|Cosmological models involving indefinite, self-sustaining cycles}}
{{Primary sources|article|date=February 2013}}
{{cosmology}}
A '''cyclic model''' (or '''oscillating model''') is any of several [[cosmological model]]s in which the [[universe]] follows infinite, or indefinite, self-sustaining cycles. For example, the oscillating universe theory briefly considered by [[Albert Einstein]] in 1930 theorized a universe following an [[eternity|eternal]] series of oscillations, each beginning with a [[Big Bang]] and ending with a [[Big Crunch]]; in the interim, the universe would [[metric expansion of space|expand]] for a period of time before the gravitational attraction of matter causes it to collapse back in and undergo a [[Big Bounce|bounce]].