Which innovative marketing strategy did telescope manufacturer Celestron use in 2018 that revolutionized how amateur astronomers purchase equipment?

In the competitive world of astronomy products and services, companies have employed innovative marketing strategies to stand out. From telescope manufacturers to planetarium software developers, astronomical brands have created memorable campaigns that capture the wonder of space exploration. Test your knowledge of how astronomy-focused companies have marketed their products and services to both amateur stargazers and professional astronomers.

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AR-powered 'StarView' app that let customers virtually place telescopes in their home and test sky views from their location before purchasing
The 'Cosmic Lease' program allowing customers to upgrade their telescopes annually for a subscription fee
Celebrity astronomer endorsement program featuring Neil deGrasse Tyson as chief product ambassador
Telescope trade-in marketplace where customers could sell used equipment directly through Celestron's platform