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This Australian astronomer went to Bavaria to look across the universe


15 April 2018

Sydney Morning Herald - London: Professor Geraint Lewis' job is to look half way across the universe at something invisible.

One of the world's most powerful telescopes has discovered a fiery ring in space. It's a cloud of glowing gas in a distant galaxy, 12 billion light years away, its image bent into a circle by an intervening "gravitational lens".

Lewis is trying to work out what that lens is made of. It's an infernally tricky task over unimaginable distances. But Lewis has found the real tyranny of distance is between Sydney and Bavaria.

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