Changes in the Rate of Expansion over Time

Changes in the Rate of Expansion over Time

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News release ID: STScI-2001-09
Release Date: Apr 2, 2001
Image Use: Copyright
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This diagram reveals changes in the rate of expansion since the universe's birth 15 billion years ago. The more shalow 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 as a faster rate. Astronomers theorize that the faster expansion rate is due to a mysterious, dark force that is pulling galaxies apart.

Cosmology, Deep Fields, Distant Galaxies, Hubble Deep Field, Infographics, Stars, Supernovae, Survey


Credit: Ann Feild (STScI)