Which major retail chain revolutionized amateur astronomy by introducing the first mass-market 'Dobsonian' telescopes in the 1990s, making quality stargazing more affordable for the general public?

The world of astronomy retail has evolved dramatically over the decades, with specialized stores and brands catering to everyone from casual stargazers to professional astronomers. This trivia question focuses on one of the most significant retail developments in bringing astronomy to the masses. Test your knowledge about the business side of the cosmos!

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Orion Telescopes & Binoculars
Celestron
Meade Instruments
Edmund Scientific