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
Europa On the Cover: An intricate network of dark lines covers the bright, smooth surface of Europa. The satellite of Jupiter is only one of the strange and beautiful ice worlds orbiting the giant outer planets of our solar system.

Volume 1, number 4
June/July 1981


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


3 Deep Space Exploration and the Space Shuttle: James D. Burke looks toward the future upon the succesfful first flight of the orbiter Columbia.

4 Solar Sailing: A Frontier Transportation System: Chauney Uphoff explains this exciting technology.

6 The Special Case of Galileo Galilei: Maureen Miller recounts the cases of Galileo vs. the Catholic Church—in both 1980 and the 17th century.

8 Ice Worlds: Michael Malin takes us on a tour of icy moons in the outer solar system.

13 Giant Landslides in the Mariner Valley on Mars: Conway Snyder reports on these striking features.


11 Washington Watch New faces at NASA; Halley's Comet.

12 News & Reviews Meteorites from the Moon and beyond.

14 Society Notes The Search for Extraterrestrial Intelligence (SETI); book sales.

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.


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!