Help Shape the Future of Space Exploration

Join The Planetary Society Now  arrow.png

Join our eNewsletter for updates & action alerts

    Please leave this field empty
Use when no other thumbnail exists

John Spencer

Latest Planetary Radio Appearance

Rocketplanes, Space Yachts and New Space Geeks at SpaceUp!

02/13/2012 | 0:28:50

Rocketplanes, Space Yachts and New Space Geeks at SpaceUp!

More Planetary Radio shows »

Latest Blog Posts

Less than 24 hours to New Horizons' Launch

Posted 2006/01/16 04:17 CST | 0 comment

New Horizons just experienced what we hope will be its last ever sunset on Earth. There will be three more sunsets to come.

Older blog posts »

Facebook Twitter Email RSS AddThis

Essential Advocacy

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

Funding is critical. The more we have, the more effective we can be, translating into more missions, more science, and more exploration.


Featured Video

The Planetary Post - Star Trek 50th Anniversary

Watch Now

Space in Images

Pretty pictures and
awe-inspiring science.

See More

Join The Planetary Society

Let’s explore the cosmos together!

Become a Member

Connect With Us

Facebook, Twitter, YouTube and more…
Continue the conversation with our online community!