Hubble passed inspection… so how did it still see blurry stars? 🔭 Its mirror was polished to the wrong curve because a flawed null corrector made the test confirm the shape engineers expected, not the shape they actually needed. The mirror wasn’t “bad” by the test. The ruler was biased. A powerful engineering lesson: precision is useless when the reference is wrong. Would your quality checks catch this kind of hidden bias? #Hubble #EngineeringFailure #ForensicEngineering #OpticalEngineering #SpaceScience #QualityControl #Metrology #AerospaceEngineering #ScienceExplained #EngineeringLessons - @amazeifystore