Volume 21, number 1
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(Planetary Society members only)
4 Opinion: Systems Engineering—A Personal Memoir: James D. Burke ruminates on the lessons to be learned in the wake of several spacecraft losses.
6 Odd Asteroids and Closet Comets: The Distinction Blurs: Don Yeomans talks about how our definitions of small objects in our solar system may need substantial reworking.
12 The Express to Mars: Robert Burnham takes a look at the plans for Europe's first mission to the Red Planet.
18 Hunting the Elusive "Wow": Robert Gray presents the results of The Planetary Society's efforts to redetect SETI's "Wow" signal.
3 Members' Dialogue Don't mess with Mars; patience and perseverance
17 World Watch Dim future for a Pluto mission; NASA advisory councils.
20 Q&A What is the asteroid belt? What color is the Moon?
22 Society News Red Rover, Shoemaker NEO grant winners, and the International Space Art Content