Join Donate

Video

The MarsDials and Bill Nye the Science Guy

Please accept marketing-cookies to watch this video.

Bill Nye tells how a simple shadowcaster intended for the Mars Exploration Rovers became an interplanetary campaign with the slogan, "Two Worlds, One Sun."

You are here:
Comments & Sharing
Bill Nye and people
Let's Change the World

Become a member of The Planetary Society and together we will create the future of space exploration.

Join Today

LightSail
LightSail 2

LightSail 2 launched aboard the SpaceX Falcon Heavy. Be part of this epic point in space exploration history!

Donate