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Will YOU take your place in space today?

We need 300 new members by October 31st to meet our goals to advance space science and exploration! Will you take your place in space?

Become A member

If you've made it this far — you have come to the right place. You are drawn to the exploration of our Solar System and beyond, you are fascinated by the prospect of finding life beyond Earth, and you know how important asteroid defense is to keep our planet safe. Join today and become part of the Earth’s largest advocacy dedicated to advancing space exploration!

Learn about member benefits.

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New Planetary Society T-Shirt

Join today and get the official Planetary Society T-shirt designed exclusively for members.

As a member of the Explorer Family/Dual level, you're entitled to a second membership card and T-shirt! Please note that name fields for the second membership card must be completed.

Billing / Member Information

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  • Visa
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As a Member, You Enjoy Special Privileges

Basic benefits include:

Click buttons below to review unique premiums for each membership level:

Explorer (Individual) • $4/month

Explorer (Family/Dual) • $6/month

Mariner • $10/month

Pathfinder • $20/month

Visionary • $40/month

Scout • $80/month

Surveyor • $200/month

Rover • $400/month

Pioneer • $825/month

Voyager • $1,650/month

New Horizons • $2,500/month

Become A member


We're excited for you to become a member but understand you may have questions. We've compiled answers to our Frequently Asked Questions and encourage you to contact us if you still have any outstanding questions.