Which astronomy retail innovation led to the greatest single-year increase in amateur astronomy participation during the 2010s?

The astronomy retail sector has undergone significant transformations in recent decades, with companies adapting to both technological advances and changing consumer interests. From the rise of digital planetariums to home telescope innovations, the way people access and experience the cosmos has evolved dramatically. Test your knowledge about a pivotal moment in astronomy retail history that changed how everyday people connect with the stars.

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Celestron's introduction of the first sub-$200 computerized GoTo telescope mount in 2013
The launch of NASA's official merchandise stores in major shopping malls across America in 2015
The creation of subscription-based 'Night Sky Boxes' with monthly astronomy equipment and guides in 2017
The development of smartphone-compatible telescope eyepiece adapters that went mainstream in 2019