Community Account Renew Search

Back To Main Menu

Back To Main Menu

Back To Main Menu

Get Involved
Support Our Mission
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.
Give Today

Back To Main Menu

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.

Back To Main Menu

Membership

Our Work
Explore Space
Take Action
About
Membership
Member Community
Account Center
Search

“Exploration is in our nature.” - Carl Sagan

Articles

Stories, updates, insights, and original analysis from The Planetary Society.

What are competed planetary missions?

A critical part of a balanced exploration program, competed missions are scientist-led projects that cost less and occur more frequently than large, flagship-class missions.

For full functionality of this site it is necessary to enable JavaScript. Here are instructions on how to enable JavaScript in your web browser.