Explore Worlds
Find Life
Defend Earth
Session 3: The Moon and Mercury
The Moon, Mercury, and Planetary Surfaces Processes
What We Do
How We Work
Our Results
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The Planetary Fund
Accelerate progress in our three core enterprises — Explore Worlds, Find Life, and Defend Earth. You can support the entire fund, or designate a core enterprise of your choice.
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About Us
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.