Dark Energy


Dark Energy.pps

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Universe Dark Energy-1 Expanding Universe
This diagram shows changes in the rate of expansion since the Universe's birth 14 billion years ago. The more shallow the curve, the faster the rate of expansion. The curve changes noticeably about 7.5 billion years ago, when objects in the Universe began flying apart at a faster rate. Astronomers theorize that the faster expansion rate is due to a mysterious, dark energy that is pulling galaxies apart. Credit: NASA/STSci/Ann Feild

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