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What is dark energy?

Symmetry Magazine - 7 Jul 2015 17:30
What is dark energy? It’s everywhere. It will determine the fate of our universe. And we still have no idea what it is. Looking up at the night sky reveals a small piece of the cosmos—patches of stars speckled across a dark, black void. Though the universe appears stationary to the naked eye, it is expanding at an increasing rate, with the distance between galaxies doubling every 10 billion years. Scientists attribute this phenomenon to dark energy, which makes up 70 percent of our universe—and will determine ...
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