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In “New evidence backs dark energy” (ABC, 16 April 2012). Stuart Gary reports,
A new study of quasars has provided further evidence that dark energy is accelerating the expansion of the universe.
The study to be published in the Astronomical Journal supports earlier work by scientists including Nobel Laureates Professor Brian Schmidt from the Australian National University, Saul Perlmutter and Adam Riess.
Their discovery was based on the measurement of exploding stars called Type 1a supernovae.
Here’s a physicist panel discussion on the subject: