No more @Twitter crop? It's our time to shine 
The largest & most powerful space telescope ever built is launching this October
pic.twitter.com/l9zsgsiOh2
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Make sure you check the mirrors.
There were many lessons learned from Hubble. We used completely separate sets of measurement tools and techniques for verification than for manufacturing. And we performed an end-to-end optical test not done on Hubble. Read more here: https://jwst.nasa.gov/content/about/faqs/faq.html#mirrortests …
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Measure twice, cut once. Right on.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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