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browse projects: Apophis Mission Design Competition Asteroids - The Potential Threat Carl Sagan Fund for the Future Catalog of Exoplanets FINDS Exo-Earths International Year of Astronomy LIFE Experiment: Phobos LightSail - Solar Sailing Mars Climate Sounder Team Website Messages from Earth Microrovers Mirror Bees: Planetary Defense Observing Earth Pioneer Anomaly Planetary Microphones SETI Optical Telescope SETI Radio Searches SETI@home Shoemaker NEO Grants Space Advocacy Space Information Stardust@home

browse space topics: 2001 Mars Odyssey Akatsuki (Venus Climate Orbiter / PLANET-C) Asteroids and Comets Cassini-Huygens Chandra X-Ray Observatory Chandrayaan-1 Chang'e 1 Compare the Planets Curiosity (Mars Science Laboratory) Dawn Deep Impact Earth Extrasolar Planets Genesis Hayabusa (MUSES-C) Hubble Space Telescope IKAROS Jupiter Kaguya (SELENE) Lunar Reconnaissance Orbiter (LRO) Mars Mars Exploration Rovers Mars Express Mars Global Surveyor Mars Reconnaissance Orbiter Mercury MESSENGER Moon Near Earth Objects Neptune New Horizons Past Missions Phoenix Planetary Analogs Planetary Exploration Timelines Pluto and Charon Private Missions Rosetta Saturn Search for Extraterrestrial Intelligence SMART-1 SOHO Space Imaging Spitzer Space Telescope Stardust Trans-Neptunian Objects Ulysses Uranus Venus Venus Express Voyager Weekly Planetary Radio Trivia Contest WISE

Why Join The Planetary Society

Click to enlarge > Saturn and Tethys Credit: NASA / JPL / Space Science Institute

At The Planetary Society we make exciting projects happen, including SETI@home, solar sailing, extrasolar planet discovery, and more. Only with our Members' support are we able to encourage and undertake bold ventures to advance humankind's quest for knowledge about the cosmos. You can play a personal role in this great adventure.

Why Join?

Our Members are explorers of the solar system, seeking other worlds and searching for extraterrestrial life.  As a Member, you’ll be part of making new ventures happen, from Mars exploration…to solar sailing…to SETI projects in both hemispheres…to detecting and mapping near Earth objects…to searching for planets beyond our solar system…to helping unravel the mysteries of the Universe.
 

You’ll be part of Earth’s largest and most effective non-governmental space action group.  We don’t take government money.  We rely on donations from our Members and from other far-sighted private supporters.  So, we advocate independently and effectively. 

We shape space exploration.

Plus, as a Member, you get all these other great benefits:

Click to enlarge > Mars at opposition in 2005 Credit: NASA, ESA, the Hubble Heritage Team (STScI/AURA), J. Bell (Cornell University) and M. Wolff (Space Science Institute)

• Six issues a year of The Planetary Report, our acclaimed Members-only magazine – you can also access it online, including past issues;
• Opportunities to participate in space missions – through contests, projects, and advocacy – and to influence the course of space exploration;
• Your voice will be heard by space agencies around the world through our respected advocacy campaigns;
• Access to the Members-only section of our website;
• Your own Planetary Society Membership Card;
• Monthly electronic action alerts and snapshots of what’s happening in the space community;
• Invitations to events in your community;
• Savings on Planetary Society merchandise; and
• Knowing that you are shaping space exploration. 

The Planetary Society…with you, shaping the next age of exploration. 
Join Today!