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- Dark energy density w < -1.3 at Z > 1.5
Recent observations report w < -1.3 for z > 1.5. What was the dark energy density compared to matter density during that time? Was the universe briefly accelerating?
As compared to?kimbyd said:Because the density of dark matter was much smaller
Sorry, that was a misstatement. I've fixed it. Should be dark energy was much smaller as a fraction of total energy.Ranku said:As compared to?
Dark energy is a hypothetical form of energy that is believed to make up about 70% of the universe. It is thought to be responsible for the accelerating expansion of the universe.
The exact mechanism of how dark energy density is increasing is still unknown. However, it is believed that as the universe expands, the amount of dark energy per unit of space also increases.
One of the main pieces of evidence for dark energy density increasing is the observation that the expansion of the universe is accelerating. This was first discovered in the late 1990s and has been confirmed by multiple studies since then.
Current theories suggest that dark energy density is increasing at a constant rate. However, more research is needed to fully understand the behavior of dark energy and its effects on the expansion of the universe.
The increasing density of dark energy has significant implications for the future of the universe. It is believed that eventually, dark energy will become the dominant force in the universe, causing all matter and energy to be pulled apart, resulting in a "Big Rip" scenario.