Volume 16, number 5
Download this issue as a PDF
(Planetary Society members only)
14 Life on Mars? The Improbable Becomes Probable: Charlene Anderson covers the possible discovery of martian microfossils with a first look at the evidence.
4 Pluto: New Views From the Hubble Space Telescope: Charlene Anderson shows off some remarkable images of the tiny, distant world.
10 Why Mars? Carl Sagan details the many things Mars can teach us.
12 Another New Planet: The Excitement Builds: Charlene Anderson gives an update on the search for extrasolar planets.
16 Robots Versus Humans: The Next Space Race? Louis Friedman asks who will open up new territory in the solar system: human or robots?
18 Society Sponsors Space Research in the Third World: Duncan Steel describes our partnership with the United Nations and the European Space Agency to bring space science to the third world.
3 Members' Dialogue The continuing debate on life in the universe.
15 Society News Scanners for Saturn; new United Nations status.
19 News & Reviews "Life on Mars!"
20 Q&A How can we tell certain meteorites came from Mars?
22 Basics of Spaceflight Thermal control.