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• LightSail

  Our citizen-funded spacecraft successfully demonstrated solar sailing for CubeSats.

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The Planetary Report

The Year in Pictures

The December Solstice 2020 edition of our member magazine showcases the year's best images.

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Planetfest '21

Join Bill Nye and leading experts in a virtual festival celebrating the next era of Mars exploration! February 13, 14, and 18.

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The Planetary Society

Our Vision

Know the cosmos and our place within it.

Our Mission

Empowering the world's citizens to advance space science and exploration.