The best science and technology pictures of the week

The most impressive pictures from the worlds of science and technology this week, from a smart new contact lens to a four-winged dinosaur.
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Incredible lightning and a stranded whale


Sci-fi balloons and hungry whales

Robot giraffe and double tornado

Supersonic selfie and eerie rivers

A brooding storm and a Super Earth


Chinese lightning and rocking robots


Blazing skies and moody twisters

Amazing air displays and breathtaking nature


Volcanic plumes and home-made tanks

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