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
Planetology On the Cover: Space shuttle astronauts took this optical photo of Russia's Kliuchevskoi volcano in the early hours of its eruption on September 30, 1994. The ash plume, which reached a height of more than 18 kilometers (about 11 miles), is emerging from a vent on the north flank of Kliuchevskoi, which is partially hiddenin this view by the plume and its shadow. The small, whitish steam plume near the photo's center is emanating from the dome of a companion volcano, Bezymianny. This is part of a sequence of photos that first allowed scientists to image through ash and cloud. To see a radar version of this photo, go to jpl.nasa.gov/radar/sircxsar/kliucomp.html.
NASA

Volume 29, number 5
September/October 2009

Planetology

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

Features

4 We Make it Happen! Project Roundup: Bruce Betts fills us in on Planetary Society projects.

8 Out of This World Books: New space-related books you shouldn't be without.

12 Planetology: Viewing Earth in Context: Tom Jones and Ellen Stofan compare the planets.

Departments

18 World Watch Human spaceflight: Moon, Mars, or NEOs?

20 Q&A How will we know when we've heard ET?

21 Factinos Exoplanets and Stardust

22 Society News New society leaders, the New Millennium Committee, and volunteering.

23 Members' Dialogue The ongoing debate of human vs. robotic space exploration.

Facebook Twitter Email RSS AddThis

JOIN THE
PLANETARY SOCIETY

Our Curiosity Knows No Bounds!

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

Join Us

Space in Images

Pretty pictures and
awe-inspiring science.

See More

Join the New Millennium Committee

Let’s invent the future together!

Become a Member

Connect With Us

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