When the Hubble Space Telescope was first launched in 1990, NASA discovered a critical flaw that affected image quality. What was this famous product issue called?

The Hubble Space Telescope is one of NASA's most famous and productive space science observatories. Named after astronomer Edwin Hubble, this orbiting telescope has revolutionized our understanding of the cosmos with its stunning imagery and groundbreaking discoveries. But its journey from concept to successful operation wasn't without challenges. Test your knowledge about this iconic product launch that changed how we see the universe!

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Spherical aberration
Chromatic distortion
Thermal expansion failure
Gravitational lens effect