In the build-up to the Christmas Lectures in 2012, the Royal Institution published a new video for every day of advent revealing the elements that really excite and inspire people. In this short film, biochemist Liz Bonnin looks to the stars for her pick from the periodic table.
The properties of beryllium make it the perfect material for the huge mirror being used in the James Webb Space Telescope - NASA's successor to the Hubble telescope, launching in 2018.
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