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A large, dramatically lit piece of hardware is in the center of a workshop. It's silver and circular, like a giant CD, except that it has a ring of smaller circles (mostly filters) on it.

NASA’s Roman Mission Completes Key Optical Components

Engineers at Ball Aerospace, one of the Nancy Grace Roman Space Telescope's industrial partners, have installed and aligned the element wheel assembly into the observatory’s Wide Field Instrument. The assembly will help Roman solve some of the most profound mysteries in astrophysics.

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