One of those very special days in life – my first sight of the complete #JWST 

The work of many thousands of dedicated North American & European engineers & scientists, the observatory is in Kourou & now just 42 days from launch 

@nasa @esa @csa_asc @esasciencepic.twitter.com/o1GDl6lCXN – at Centre Spatial Guyanais
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My great pleasure & thanks in advance for a perfect launch to L2 on 18 December
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