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Dark energy remains a mystery as Einstein’s theory of gravity passes another test


Scientists are still coming up empty in the hunt for flaws in Einstein’s theory of general relativity that could explain the mysterious force driving the accelerating expansion of the universe. 

The researchers studied 100 million galaxies looking for signs that the strength of gravity has varied throughout the universe’s history or over vast cosmic distances. Any sign of such a change would indicate that Einstein’s theory of general relativity is incomplete or in need of revision. Variation could also shed light on what dark energy is, beyond that it’s the name scientists give to whatever is causing the expansion of the universe to accelerate.





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