Which product development approach has most significantly expanded the consumer astronomy market in the past decade?

The astronomy industry has seen remarkable product innovations over the past decade, transforming how both professionals and amateurs interact with the night sky. From advanced telescope technology to astronomy apps and software, product development in this field bridges cutting-edge science with consumer accessibility. This trivia question focuses on a significant product development trend that has revolutionized the astronomy consumer market.

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Integration of smartphone compatibility with telescopes and astronomy tools
Development of ultra-high magnification optics for home telescopes
Introduction of subscription-based astronomy content services
Creation of astronomy equipment using aerospace-grade materials