One of the most iconic features of the #NASAWebb telescope is its primary mirror: 18 segments made of beryllium and covered in a thin layer of gold. The large mirror (21.6 ft/6.5 m in diameter) will view faint galaxies 13 billion light-years away: https://go.nasa.gov/3mWQ09K pic.twitter.com/EE3spCHPDy
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Q: Circular motion at the L2 stationary location being used for fluid dynamics within the craft? Or is the reason classified?
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