This page contains high resolution, digital versions of material from Nature 445, 286 (astro-ph version). They should be credited to "Richard Massey/Nature".

Cover artwork

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Front cover of Nature magazine Blue version Blue version

Figures

Click on the thumbnail images to obtain versions of the figures in Adobe Illustrator format.

Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Last updated by Richard Massey on 2nd May 2008.

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