Oscillating theory of the universe

Definition

The oscillating theory of the universe posits that the universe undergoes a series of expansions and contractions. This cyclical process includes a Big Bang, followed by expansion, eventual contraction, and then another Big Bang.

5 Must Know Facts For Your Next Test

1. The oscillating theory suggests an infinite series of universes, each beginning with a Big Bang.
2. It contrasts with the idea of a single, unending expansion as suggested by the standard Big Bang model.
3. The theory requires that the density of the universe be high enough to eventually halt its expansion and trigger a contraction.
4. Observations of dark energy complicate this model, as dark energy drives accelerated expansion which may prevent future contraction.
5. This theory is partially inspired by general relativity and cyclic models found in various cosmological studies.

Review Questions

• What key mechanism differentiates the oscillating theory from the standard Big Bang model?
• How does dark energy challenge the feasibility of the oscillating universe theory?
• What observational evidence would support or refute the possibility of an oscillating universe?

Related terms

Big Bang Theory: A cosmological model describing the initial expansion and evolution of the universe from a hot, dense state.

Heat Death: A theoretical end scenario for the universe where it reaches thermodynamic equilibrium and no more work can be performed.

Dark Energy: An unknown form of energy believed to drive the accelerated expansion of the universe as observed today.