Which scientific instrument was famously recalled in 2004 after NASA discovered its mirror had been ground to the wrong specification, requiring a complex in-orbit repair mission?

Product recalls happen in every industry, but in science they can have particularly far-reaching consequences. From laboratory equipment to pharmaceutical products, scientific recalls often involve complex regulatory procedures and can impact research worldwide. Test your knowledge about some of the most significant product recalls in the scientific community that changed protocols, regulations, or research practices.

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• Hubble Space Telescope
• Mars Climate Orbiter
• Chandra X-Ray Observatory
• International Space Station Spectrometer

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