Volume 7, number 6
Life in the Universe
Download this issue as a PDF
(Planetary Society members only)
3 Life in the Universe: Donald DeVincenzi introduces our special issues looking at the most fundamental questions about life.
6 Chemstry Between the Stars: William Irvine explains how biogenic elements—formed deep within stars—traveled across space to make up life on our planet.
10 The Origin of Life: James Ferris discusses the chemical processes of life.
12 Mars, Then and Now: Norman Horowitz takes us on a historical tour of our view of the Red Planet.
14 Biology and the Exploration of Mars: Harold Klein reports on our current state of knowledge about Mars, and the possibility of past or present life there.
16 Time Travel and Chemical Evolution: A Look at the Outer Solar System: Tobias Owen tours the chemical environments of Jupiter and beyond, and their potential for life.
20 Finding and Studying Other Planetary Systems: David Black looks at the prospects for detecting extrasolar planets—and with them, extraterrestrial life.
23 The Windows of SETI—Frequency and Time Travel in the Search for Extraterrestrial Intelligence: Bernard Oliver thinks that if we do not begin our search soon, we'll lose the opportunity to do so from Earth.
26 Terraforming: Making an Earth of Mars: Christopher McKay goes over some of the possibilities for creating an Earthlike environment on our nearby neighbor.
19 News & Reviews Venus, Pluto, and comets.
22 Society Notes New Millennium Committee, Mars Balloon, contests and awards.
29 World Watch 30th anniversary of Sputnik, CRAF, Mars Balloon study, and Mars sample return.