Join Donate

Video

Why Does My Shadow Change Color?--Consider the Following With Bill Nye

Why Does My Shadow Change Color? Bill Nye sheds some colorful light on this shady topic.

You are here:
Comments & Sharing
astronaut on Phobos
Let's Change the World

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

Join Today

Mars
Advocacy

Our Advocacy Program provides each Society member a voice in the process. Funding is crucial.

Donate