A constant in the clouds

  • Jean-Philippe Uzan
  • Bénédicte Leclercq
Part of the Springer Praxis Books book series (PRAXIS)


Our commission of inquiry dreams of travelling back in time, to see if the fine-structure constant has varied in the past. To this day, the only time machine we have is the observation of the cosmos, and we can look deeply into space to reveal the universe as it was billions of years ago. We shall now turn our attention to outer space, so bring out the telescopes!


Absorption Line Cosmic Background Radiation Radio Source Radio Galaxy Dust Cloud 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Praxis Publishing Ltd. 2008

Authors and Affiliations

  • Jean-Philippe Uzan
    • 1
  • Bénédicte Leclercq
    • 2
  1. 1.Institut d’Astrophysique de ParisCNRSParisFrance
  2. 2.Pour la scienceParisFrance

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