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The Planetary Report
A Wider View On the Cover: Generations of stars glow in this infrared stellar "family tree" image taken by the Spitzer Space Telescope. This wispy, star-forming region, called W5, is about 6,500 light-years away in the constellation Cassiopeia. Here, the oldest stars are the blue dots in the hollow cavities (other blue dots are background and foreground stars not associated with the region). Younger stars line the cavity rims and show as pink at the ends of the pillars at upper right. White indicates star-forming areas, red shows heated dust that pervades the cavities, and green highlights dense clouds. For an expanded view of this image, visit http://www.spitzer.caltech.edu/Media/releases/ssc2008-15/ssc2008-15a.shtml.
NASA/JPL-Caltech/L. Allen & X. Koenig (Harvard-Smithsonian Center for Astrophysics)

Volume 28, number 6
November/December 2008

A Wider View

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

Features

4 The Planetary Society's All-Sky Optical SETI: Where Are We Now? Paul Horowitz and His Research Group (Harvard University Optical SETI) give an update on this exciting Society project.

8 2008—The Year in Pictures: Emily Stewart Lakdawalla showcases the year in space images.

15 Help Us Celebrate the Hubble Space Telescope: Neil deGrasse Tyson wants to know: what are YOUR favorite Hubble images?

Departments

16 We Make it Happen! Phobos LIFE passes the test.

18 Member's Dialogue Global climate change; achieving the dream of space exploration.

19 World Watch Bill Nye and Lou Friedman visit the International Astronautical Federation Congress. 

20 Q&A How deep is Mars red? What is the speed of sound in space?

22 Society News Give to The Planetary Society.

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