Which digital marketing innovation led to the greatest increase in consumer telescope sales between 2015-2020?

The astronomy industry has undergone significant transformations in how telescopes, planetarium experiences, and star-gazing products are marketed to consumers. Digital marketing strategies have been particularly revolutionary in how they've connected amateur astronomers to products and expanded the market beyond traditional enthusiasts. Test your knowledge about how astronomy products have been marketed in the digital age!

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Augmented reality apps that show what specific celestial objects would look like through different telescope models
Celebrity astronomer endorsements on social media platforms
Virtual telescope testing experiences in retail stores
Subscription-based content services bundled with telescope purchases