The Lambda-CDM, Lambda cold dark matter, or ΛCDM model is a mathematical model of the Big Bang theory with three major components: ordinary matter. It is the current standard model of Big Bang cosmology, [1] as it is the simplest model that provides a reasonably good account of:

We have a well-established standard model for cosmology and prospects for considerable additions from work in progress. I offer a list of elements of the standard model, comments on controversies in the interpretation of the evidence in support of this model, and assessments of the directions extensions of the standard model seem to be taking.

The standard cosmological model is known as \(\Lambda\) CDM. Two of the key features of this model are given in it’s name: It assumes that the Universe has a component of its energy density driven by the cosmological constant, \(\Lambda\) , and that dark matter is cold dark matter (CDM) .

As the universe continues to expand over time, the negative pressure associated with the cosmological constant (the form of dark energy in ΛCDM) increasingly dominates over opposing gravitational forces, and the expansion of the universe accelerates. Contributed by the NASA / LAMBDA Archive Team.

Jun 15, 1998 · Abstract: We have a well-established standard model for cosmology and prospects for considerable additions from work in progress. I offer a list of elements of the standard model, comments on controversies in the interpretation of the evidence in support of this model, and assessments of the directions extensions of the standard model seem to ...

THE COSMOLOGICAL MODEL. Main elements of the model are easily listed: in the large-scale average the universe is close to homogeneous, and has expanded in a near homogeneous way from a denser hotter state when the 3 K cosmic background radiation was thermalized. The standard cosmology assumes conventional physics, including general relativity ...

Apr 18, 2019 · The current Standard Model of Cosmology (SMC), also called the “Concordance Cosmological Model” or the “ΛCDM Model,” assumes that the universe was created in the “Big Bang” from pure energy, and is now composed of about 5% ordinary matter, 27% dark matter, and 68% dark energy [1].

As observations have accumulated to help refine or reject theoretical predictions, a consensus or "standard" 6-parameter Cosmological-constant (Lambda - Λ) Cold Dark Matter (CDM) model has been successfully applied to the interpretation of a range of cosmologically-oriented observations.

Only in the latter half of the 20th Century was enough physical evidence accumulated to make reasonable models of the formation process of the universe. The present standard model, the "big bang" model, was developed around three major pieces of experimental evidence: The hydrogen-helium abundance.

The standard cosmological model enables researchers to simulate ancient events that occurred in the distant past. This frame was taken from an animation that depicts the merger of numerous satellite galaxies with a more massive spiral star system.