Arno Penzias: Nobel laureate who co-discovered ‘echo of Big Bang’ dies aged 90
His work led to the discovery of the cosmic microwave background
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I am news editor of Physics World magazine. I also contribute regularly to the website and work on the Physics World special report programme. I joined Physics World in 2008 after completing a PhD in condensed-matter physics at the Max Planck Institute for Solid State Research in Stuttgart, Germany. I mostly cover the development of physics facilities around the world. Outside work, over the past couple of years I have become particularly adept at changing nappies.
His work led to the discovery of the cosmic microwave background
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