The acceleration of the expansion of the universe confirmed

By Michael on January 31, 2008 at 2:57 am | In Blog Posts, cosmology |

Large-scale structures

Via Cosmic Log:

Ten years after supernovae provided the first evidence that the expansion of the universe is accelerating, a survey of more than 10,000 galaxies has provided independent confirmation that the cosmic speed-up factor known as dark energy is for real.

Cosmic Log provides a very nice analysis of this press release from the European Organisation for Astronomical Research (ESO).

So it seems that the expansion of the universe is indeed accelerating. This means that cosmological constant is non-zero and dark energy, or some alternate explanation, is necessary to explain the observations. Our cosmology seems to be consistent and correct in terms of what is happening, we just don’t know why it is happening.

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  1. [...] of the most significant scientific findings in the last decade was that the expansion of the universe is accelerating. The acceleration is caused by a previously unknown dark energy that makes up approximately 70 [...]

    Pingback by NASA and DOE Developing the First Space-Based Dark Energy Observatory : Red, Green, and Blue — November 22, 2008 #

  2. [...] of the most significant scientific findings in the last decade was that the expansion of the universe is accelerating. The acceleration is caused by a previously unknown dark energy that makes up approximately 70 [...]

    Pingback by Environment News Feed » NASA and DOE Developing the First Space-Based Dark Energy Observatory — November 22, 2008 #

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