Which revolutionary scientific instrument, launched in 1990, fundamentally transformed our understanding of the universe despite initially having a serious optical flaw that required a repair mission?

Scientific breakthroughs often depend on innovative instrumentation. When powerful new tools become available, research capabilities expand dramatically, opening doors to discoveries that were previously impossible. This poll tests your knowledge about a pivotal moment in scientific instrumentation that transformed multiple fields of research and led to numerous Nobel Prize-winning discoveries.

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Hubble Space Telescope
Large Hadron Collider
James Webb Space Telescope
Chandra X-ray Observatory