Dark energy -- 10 years on

Three quarters of our universe is made up of some weird, gravitationally repulsive substance that was only discovered ten years ago – dark energy. This month in Physics World, Eric Linder and Saul Perlmutter, both at the University of California at Berkeley, reveal how little we know about dark energy and describe what advances in our knowledge of dark energy we can expect in the coming decade from a series of planned space missions.

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<p><a href="http://www.physorg.com/news115622697.html">Dark energy -- 10 years on</a></p> <p>Three quarters of our universe is made up of some weird, gravitationally repulsive substance that was only discovered ten years ago – dark energy. This month in <i>Physics World</i>, Eric Linder and Saul Perlmutter, both at the University of California at Berkeley, reveal how little we know about dark energy and describe what advances in our knowledge of dark energy we can expect in the coming decade from a series of planned space missions.</p>