Cosmology of Einstein-de Sitter Universe

Ω

m

1

shift

0

The graphs show the expansion of a flat, matter-dominated universe as described by the Friedmann equation. In a flat universe, the cosmological parameters, matter density

Ω

m

and vacuum density

Ω

Λ

, are related by

Ω

m

+

Ω

Λ

=1

. Therefore it is sufficient to vary only

Ω

m

. The "shift" slider allows you vary the expansion rate of the initial curve

Ω

m

=1

toward the actual value

a

0

=1

.