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The Planetary Report
Mars' Watery Past On the Cover: This false-color composite image, taken by Opportunity in a region close to its landing site dubbed “Opportunity Ledge,” shows finely layered sediments that have been accentuated by erosion. The sphere-like grains, or “blueberries,” distributed throughout the outcrop are geologic features called concretions that form in preexisting wet sediments. This image was taken by Opportunity’s panoramic camera on the 50th Martian day, or sol, of the mission.
NASA/JPL/Cornell

Volume 24, number 2
March/April 2004

Mars' Watery Past

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Features

4 We Make it Happen! The Planetary Society on Mars: Bruce Betts showcases the Society's latest Mars-related projects.

12 Return to Mars' Realm: Charley Kohlhase hopes for a darker sky.

14 Planetfest2012: Curiosity Knows No Bounds! Celebrate with us in Pasadena and around the world.

18 Annual Report to Our Members: A short report on our activities and financial status from chairman of the board Bruce Murray.

Departments

3 Members' Dialogue Opinions on the current U.S. budget debate

10 World Watch Wild about Mars; save Hubble

20 Q&A How do we know where spacecraft are in space?

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