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History of the Cosmos
Caption:
Observations by the High-z Supernova Search Team, described by Robert Kirshner, hint that we live in a "stop and go" universe whose expansion slowed under the influence of gravity before accelerating again due to an unexplained dark energy. This artist's conception illustrates the history of the cosmos, from the Big Bang and the recombination epoch that created the microwave background, through the formation of galactic superclusters and galaxies themselves. The dramatic flaring at right emphasizes that the universe's expansion currently is speeding up.
(Preview Only)
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| Credit: |
Credit David A. Aguilar/Harvard-Smithsonian Center for Astrophysics |
| Year of Image: |
2003 |
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Categories:
ASTRONOMY / Astrophysics
Formats Available:
Restrictions:
No additional restrictions--beyond NSF's general restrictions--have been placed on this image. For a list of general restrictions that apply to this and all images in the NSF Image Library, see the section "Conditions".
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