Which astronomy organization pioneered the 'Stellar Membership' model that revolutionized customer loyalty programs for science centers worldwide?

The astronomy industry has created unique retail opportunities and customer engagement strategies. From observatory gift shops to space tourism ventures, astronomical organizations have developed innovative approaches to market their products and services. This poll tests your knowledge of how major astronomy centers have leveraged customer loyalty programs to enhance their public outreach and revenue streams.

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European Southern Observatory (ESO), with its tiered access program offering progressively exclusive telescope viewing opportunities
NASA's Kennedy Space Center, with its 'Mission Specialist' annual pass providing behind-the-scenes tours and launch viewing privileges
Royal Observatory Greenwich, with its 'Meridian Club' offering priority access to celestial events and historian-led tours
Hayden Planetarium, with its 'Cosmic Circle' providing advance tickets to Neil deGrasse Tyson lectures and planetarium show previews