1. Cosmic Evolution
Quicktime

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MPEG

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This animation illustrates a billion or more years of cosmic evolution, from the hot Big Bang to the formation of galaxies and clusters of galaxies. The time sequence is not to scale. The beginning of the animation covers a few minutes of cosmic evolution, whereas the later portions cover billions of years.
[Runtime: 0:30]
(Animation: NASA/CXC/A.Hobart)