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International Year of Astronomy - IYA2009
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What is dark energy?
Exactly what is dark energy? Astrophysicists would also like to know the answer to this question – it determines how the Universe will develop. Cosmologists are fairly sure that it has been expanding since the Big Bang. What is still uncertain is whether this expansion will continue forever or whether the Universe will one day begin to collapse again.
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Last update: 21/10/2009 12:15:51
Exhibition "Out of this World"
International Year of Astronomy 2009
CosmicDiary - Astronomy Blogs
Daily Podcasts at 365 Days of Astronomy
ESA - IYA2009
Planetariumshow "Touching the Edge of the Universe"
Archive: Astronomy Questions of the Week