universe
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Washington (AFP) - A team of US astrophysicists has produced one of the most precise measurements ever made of the total amount of matter in the Universe, a longtime mystery of the cosmos.The answer, published in The Astrophysical Journal on Monday, is that matter accounts for 31.5 percent -- give or take 1.3 percent -- of the total amount of matter and energy that make up the Universe.The remaining 68.5 percent is dark energy, a mysterious force that is causing the expansion of the Universe to accelerate over time, and was first inferred by observations of distant supernovae in the late 1990s...
AFP
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