Dark energy explained
We don’t understand the excitement relating to the so-called dark energy, which is an oxymoron. It is said to be dark because it does not reveal itself through interaction. It is smoothly distributed in the sense it doesn’t fall into galaxies and clusters, (otherwise it would have been found by studying the dynamics of those objects). It is persistent in the sense the density of dark energy (amount of energy per cubic light-year) remains approximately constant as the Universe expands.
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