Dark Energy Expands the Universe

  • Released Tuesday, July 3, 2007
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It is believed that after the Big Bang, the universe originally decelerated in its expansion, but then 'changed gears' and began to accelerate. The unknown force causing this recent acceleration is dubbed the 'Dark Energy.' This visualization flies through a series of galaxy clusters, the largerst gravitationally-bound objects in the Universe.

This animation flies through a series of galaxy clusters.

Credits

Please give credit for this item to:
NASA

This page was originally published on Tuesday, July 3, 2007.
This page was last updated on Wednesday, May 3, 2023 at 1:55 PM EDT.

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