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30th Anniversary of The Planetary Society
 
Explore the Saturn System with Cassini-Huygens
Exploration Timeline

Exploration Timeline

From prehistory to now -- explore through time. more»

The Sagan Fund

The Sagan Fund

The Carl Sagan Fund for the Future...supporting innovation! more»

Take a journey through space. Visit the planets, moons, asteroids, and comets that wander our planetary neighborhood and learn about the spacecraft that send us information and images about our solar system. Then, look beyond — explore newly-discovered planets orbiting other stars and search for life beyond Earth.

Society Projects


Recent Additions



Weekly Planetary Radio Trivia Contest Weekly Planetary Radio Trivia Contest

Each Monday, Planetary Radio asks listeners a question. Listeners must send in their answers to planetaryradio@planetary.org by the following Monday. The winner will be chosen by a random drawing from among all the correct entries received. This week's prize is a Planetary Radio T-Shirt! ...

 
Mars Exploration Rovers Mars Exploration Rovers

The twin Mars Exploration Rovers (MER) -- Spirit and Opportunity -- were designed to study the history of water on Mars at their landing sites and to uncover geologic clues about whether Mars had any environments wet enough in the past to have been hospitable to life. Spirit launched for the Red...

 
Asteroid 2867 Steins Asteroid 2867 Steins

Read a recent addition to our Asteroids and Comets topic section.

 
Dawn Dawn

Dawn Journals: Dawn Project System Engineer Marc Rayman is contributing updates on the status of Dawn to The Planetary Society Weblog! Dec 30, 2009: Patiently accelerating Nov 27, 2009: In the asteroid belt, but far from asteroids Oct 31, 2009: Taking up residence in the asteroid belt Sep 27,...

 
Tutorials Tutorials

Read a recent addition to our Space Imaging topic section.