Hello, Darkmatic.
Darkmatic writes:
But the dark energy and accelerating expansion is the latest model going off the latest evidence.
That is my understanding as well.
From
Einstein's Dark Energy Accelerates The Universe:
The Supernova Legacy Survey (SNLS) aims to discover and examine 700 distant supernovae to map out the history of the expansion of the universe. The survey confirms earlier discoveries that the expansion of the universe proceeded more slowly in the past and is speeding up today, apparently driven by some unknown form of energy. Since scientists don't know much about this mysterious new form of energy, they call it "dark energy."