Which psychological principle did NASA most effectively utilize in its 2019 marketing campaign that resulted in record-breaking public engagement for the James Webb Space Telescope project?

The astronomy industry has seen fascinating developments in marketing strategies over the past decade. Major observatories, telescope manufacturers, and space education platforms have employed various techniques to engage the public with the wonders of the universe. This poll tests your knowledge of how astronomy brands have leveraged consumer psychology to increase public interest in stargazing and space exploration.

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The scarcity principle - emphasizing the limited opportunities to participate in naming competitions for the telescope's first observation targets
The anticipation reward loop - releasing progressive reveal videos that stimulated dopamine response through extended anticipation of the final product
The social proof phenomenon - highlighting celebrity endorsements and astronaut testimonials about the telescope's significance
The anchoring effect - comparing the Webb telescope's capabilities to Hubble to establish value perception in the public's mind