No, the acceleration of space due to dark energy does not suggest that the Big Bang occurred earlier than the estimated age of 13.8 billion years. In fact, the acceleration of the expansion of the universe is one of the reasons why the age of the universe is estimated to be around 13.8 billion years.
The concept of dark energy emerged from observations that showed the expansion of the universe is accelerating. Dark energy is a theoretical form of energy that is thought to permeate space and drive this acceleration. It is often associated with a cosmological constant or Einstein's cosmological constant term.
The discovery of dark energy and its role in accelerating the universe's expansion came as a surprise to scientists and has had implications for our understanding of the age of the universe. The acceleration has been incorporated into models and calculations used to estimate the age of the universe.
The age estimate of 13.8 billion years takes into account the effects of dark energy on the expansion rate. By incorporating the observed acceleration, scientists have refined their models to match various cosmological observations, such as the cosmic microwave background radiation and the distribution of galaxies.
While dark energy affects the expansion rate of the universe, it does not indicate that the Big Bang occurred earlier than currently estimated. Rather, it is a factor considered when determining the age of the universe based on a variety of cosmological observations and models.