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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

Sol-by-sol Summary

Read a recent addition to our Phoenix topic section.

Dawn

Dawn Journals: Dawn Project System Engineer Marc Rayman is contributing updates on the status of Dawn to The Planetary Society Weblog! Aug. 28, 2008: Some explanations of orbital dynamics Jul. 27, 2008: We crave power! Jun. 26, 2008: Cruising past Mars' orbit May 29, 2008: Dawn Journal Apr. 22,...

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 an Explorer's Guide to Mars...

Venus Express

Venus Express raw image data was released to the Internet in August 2008. Browse the images here! Venus Express is Earth's first orbital mission to that planet since Magellan arrived in 1990. The mission's objectives are primarily to study the thick atmosphere of Venus, from the tops of its...