Approximately what proportion of the universe's total mass-energy budget is attributed to Dark Energy?
Answer
68%
Dark energy is identified as the most dominant constituent of the universe's mass-energy content, making up approximately 68 percent of the total budget. This proportion dwarfs both dark matter (around 27%) and normal matter (around 5%) combined. This high percentage is directly linked to its cosmological function: acting as a pervasive, repulsive force that drives the universe apart at an ever-increasing acceleration, rather than slowing down due to gravity as was once expected.

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