This episode of the ESOcast looks at one of the key discoveries in physics: that our Universe is, in fact, not only expanding, but also speeding up. Scientists Saul Perlmutter and Adam Riess of the US and Brian Schmidt of US/Australia were awarded the 2011 Nobel Prize in Physics for the find. Having studied a particular type of exploding stars – known as Type 1a supernovae – they concluded that gravity appears to work backwards in distant galaxies, making more distant objects seem to move faster. More information: http://www.eso.org/public/videos/esocast40a/.
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