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
The Planetary Report
Cosmos 1: Our Solar Sail On the Cover: Cosmos 1 has set sail around Earth, its Mylar blades reflecting the planet that launched it. In the background, the Milky Way beckons.
Rick Sternbach, Space Model Systems

Volume 24, number 6
November/December 2004

Cosmos 1: Our Solar Sail

Download this issue as a PDF
(Planetary Society members only)


7 Cosmos 1: The Journey Begins! Amir Alexander and Louis Friedman share the mission details and chronicle the development of the spacecraft as we gear up for our March 2005 launch.

12 Our First Look Inside a Comet: Deep ImpactLucy McFadden and Mike A'Hearn detail how this unusual mission came to be and why they're hoping to learn about the comet (and our early solar system) by examining the fresh impact crater left behind.


3 Members' Dialogue The humans vs. robotic space exploration debate continues

4 We Make it Happen! Hunting for impact craters on Earth

18 World Watch SpaceShipOne, Society political advocacy efforts, and the NASA budget

20 Q&A Is Titan's surface well-lit enough for Huygens to see anything? How are rocks on Mars broken apart?

22 Society News Newest members of the advisory council; Planetary Radio expands

Facebook Twitter Email RSS AddThis


Advocate for Space!

Fifteen years ago, Society members and passionate space advocates like you helped save the Pluto mission. Now we can do the same for missions to Europa and Mars.

Join over 27,600 people who have completed their petition and consider a donation to support advocacy efforts.

Sign Our Petition

Space in Images

Pretty pictures and
awe-inspiring science.

See More

Selfies to Space!

Take flight with a selfie on LightSail™ in 2016!

Send a Selfie Now

Connect With Us

Facebook! Twitter! Google+ and more…
Continue the conversation with our online community!