Astronomy Without A Telescope – Assumptions
The Lambda-CDM model attempts to describe the entire universe by assuming that the entire universe is both isotropic and homogeneous. This assumption also applies to the past, present and future - incorporating a single originating big bang event, a current flat geometry and a future dominated by accelerating expansion - here, there and everywhere. Sourced from: coldcreation.blogspot.com
The current standard model of the universe, Lambda-Cold Dark Matter, assumes that the universe is expanding in accordance with the geometrical term Lambda – which represents the cosmological constant used in Einstein’s general relativity. Lambda might be assumed to represent dark energy, a mysterious force driving what we now know to be an accelerating expansion of space-time. Cold dark matter is then assumed to be the scaffolding that underlies the distribution of visible matter at a large scale across the universe.
But to make any reasonable attempt at modelling how the universe is – and how it unfolded in the past and will unfold in the future – we first have to assume that it is roughly the same everywhere. (...)
Read the rest of Astronomy Without A Telescope – Assumptions
Provided by Universe Today
