Which astronomical event triggered the largest single spike in consumer telescope sales in the 21st century?

The astronomy product market has seen remarkable growth in recent years, with consumer telescopes and sky-watching equipment becoming increasingly sophisticated. But which astronomical event has historically triggered the largest spike in telescope sales worldwide? Test your knowledge of astronomy retail trends in this challenging trivia question about consumer behavior in the stargazing market.

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Halley's Comet's 2061-2062 approach announcement (pre-orders)
The 2017 Total Solar Eclipse across the United States
Mars' closest approach to Earth in 2003 ('Mars Spectacular')
The 2012 Venus transit across the Sun