News Feature

Unseen Universe: Welcome to the dark side

Physicists say that 96% of the Universe is unseen, and appeal to the ideas of 'dark matter' and 'dark energy' to make up the difference. In the first of two articles, Jenny Hogan reports that attempts to identify the mysterious dark matter are on the verge of success. In the second, Geoff Brumfiel asks why dark energy, hailed as a breakthrough when discovered a decade ago, is proving more frustrating than ever to the scientists who study it.

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  1. 1.

    et al. preprint at (2007).

  2. 2.

    , & preprint at (2007).

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Author information


  1. Jenny Hogan is a reporter for Nature in London.

    • Jenny Hogan


  1. Search for Jenny Hogan in:

See Insight, page 269, and Editorial, page 225.


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