Astronomy/An Accelerating Universe

Space is flat. This is shown by the density of matter, and cosmic background radiation.

The radiation left over from the Big Bang is 3° Kelvin.

The rate of expansion of the universe is greater in proportion to the distance.

Other Cosmological Models

Einstein's model for the universe was a constant size. He postulated a $\lambda$ (lambda) force that kept everything from collapsing.

Immanuel Kant proposed a disc-shaped universe.