Doubt cast over dark energy?

[Andrzej Marecki]

             NEWSALERT: Saturday, December 13, 2003 @ 2327 GMT
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          The latest news from Astronomy Now and Spaceflight Now


HAS XMM-NEWTON CAST DOUBT OVER DARK ENERGY?
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In a survey of distant clusters of galaxies, European Space Agency's
XMM-Newton observatory has found puzzling differences between today's
clusters of galaxies and those present in the Universe around seven
thousand million years ago. 

Alain Blanchard of the Laboratoire d'Astrophysique de l'Observatoire
Midi-Pyrenees and his team use the results to calculate how the abundance
of galaxy clusters changes with time. Blanchard, knowing that this
conclusion will be highly controversial, said: "To account for these
results you have to have a lot of matter in the Universe and that leaves
little room for dark energy."

   http://spaceflightnow.com/news/n0312/12darkenergy/

[...]

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-- 
Andrzej