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in science •  7 years ago 

While some great questions of space and the universe have been answered in recent times, there are others that still remain unresolved. This contradicts previous studies that claimed that the universe contracted. It is then when the concept of dark energy is created, a force that separates the cosmos causing the expansion of the universe. While the data determine that the universe is composed of 73% dark energy, it has never been detected directly, and its composition remains a mystery.

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