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

Your Role In Space Exploration Starts Now

Become A Member

Featured Stories

Articles

Perseid meteor shower 2022: How to watch

Articles

Why we have the SLS

Articles

JWST versus Hubble: How are they different?

Explore Worlds

Triton, Neptune's largest moon

Night Sky

What’s up in the night sky: August 2022

Planetary Radio

Comets Stink! The Chemical Zoo Found at Comet Chury

Support Our Core Enterprises

Your Planetary Fund support powers our mission to explore worlds, find life, and defend Earth.

Donate Today

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.