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Know the cosmos and our place within it.
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“Exploration is in our nature.” - Carl Sagan

Planetary Video • More

LightSail 2: Fulfilling a Dream

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Carl Sagan dreamed of solar sailing before founding The Planetary Society in 1980. Our members have helped us fulfill that dream.

With your help, we will go even farther to advance new space technologies, defend Earth, and help NASA’s budget grow to create more missions.

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