Planetary Society logo
  • “Exploration is in our nature.” - Carl Sagan

Your Role In Space Exploration Starts Now

Become A Member

Featured Stories

Night Sky

What’s up in the night sky: July 2022

STEP Grants

Request for Proposals for the 2022 STEP Grants

Planetary Radio

Asteroid Day! Earth Plays Defense

Articles

China looks to outer Solar System with nuclear Neptune orbiter

Articles

How do planets get rings?

Articles

What might JWST reveal about TRAPPIST-1?

The LightSail 2 Mission

LightSail updates

LightSail 2 sails into Smithsonian

LightSail home

The LightSail mission

Donate

Support the mission

Carl Sagan co-founded The Planetary Society to give you a role in space exploration.

Join CEO Bill Nye and the world’s largest and most effective space advocacy movement.

Become a member

Please accept marketing-cookies to watch this video.

Sharing and growing the passion, beauty, and joy of space exploration.

lightbulb

Educate

We expand public knowledge about space.

Learn More
megaphone

Advocate

We shape space policy and fight for future exploration.

Learn More
rocket

Innovate

We invest in innovative space science and technology.

Learn More
hands holding earth

Collaborate

We cultivate a worldwide movement for space.

Learn More
people at launch event

Become A Member

$4/month
$10/month
$20/month
$40/month

Get More Space

Sign up for updates, weekly tools, and exclusive opportunities to support space exploration. You may opt out any time. View our Privacy Policy.