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A letter "R" on a historic document is shown in pink outlined in blue, as a result of false-color imaging. The R is speckled with blue. The background of the document is primarily yellow, with swaths of green and blue.

Hubble technology used to examine historical documents

This false-color image, generated by the Charters of Freedom Monitoring System, shows where ink has begun flaking on a historical document.

Image Credit: NASA
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Image CreditNASA
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