When NASA launched the Hubble Space Telescope in 1990, what critical flaw was discovered that required a special Space Shuttle mission to repair?

The Hubble Space Telescope is one of astronomy's most famous products, revolutionizing our view of the cosmos since its deployment. But its journey to space wasn't smooth. This poll tests your knowledge of this iconic scientific instrument's troubled product launch history. While Hubble has provided breathtaking images that have become cultural touchstones, its initial deployment faced a significant technical issue that required a dramatic solution. Do you know what happened?

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• The primary mirror had a spherical aberration due to manufacturing error
• The solar panels failed to deploy properly, limiting power generation
• The communication system malfunctioned, preventing data transmission
• The telescope's gyroscopes were installed backward, affecting positioning

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