Launch it already! 
@NASAWebb's sunshield has 5 layers, in part so it can use the vacuum of space between the layers to cool down. One thick sunshield would conduct the heat from the bottom to the top more than 5 layers separated by vacuum. https://go.nasa.gov/2sFbn2K #JWSTpic.twitter.com/dHD9tUugBE
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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a true work of art !! I am fascinated by JWST !!
Thanks. Twitter will use this to make your timeline better. UndoUndo
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