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Final Cleaning of the Spacecraft
 
spacecraft's surface was inspected using UV light

On March 6, 2009, in the Cleanroom of S1B building, CSG, Kourou, French Guiana, the Planck spacecraft was meticulously cleaned with a special vacuum hoover. The spacecraft's surface was inspected using UV light to detect dust particles that fluoresce after illumination with UV.

Image Credit: ESA

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