Everything we see in the Universe around us — stars, planets, galaxies, and more — totals less than five percent of the total mass and energy that fills the Cosmos. The nature of dark matter and dark energy, which make up the vast majority of everything which exists, remains a mystery. While dark matter holds galaxies and galaxy clusters together, dark energy fuels the ever-increasing rate at which the Universe expands. Although these effects are visible to astronomers, neither dark matter nor dark energy can be directly observed, making it difficult to study most of the Universe. “We can use indirect ways…
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