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Origin and Evolution of Planetary and Satellite Atmospheres
An integrated discussion of the similarities and differences between the atmospheres of various bodies of the solar system, including the Earth.
History at the End of the World
The authors of this collection of essays propose that climate change means serious peril. The approaches begin from archaeology, literature, religion, psychology, sociology, philosophy of science, engineering and sustainable development, as well as 'straight' history. Our argument, however, is not about the science per se. It is about us, our deep and more recent history, and how we arrived at this calamitous impasse. With contributions from academic activists and independent researchers, History at the End of the World challenges advocates of 'business as usual' to think again. But in its wide-ranging assessment of how we transcend the current crisis, it also proposes that the human past could be our most powerful resource in the struggle for survival.
An Analysis of the Mariner 4 Photography of Mars
A catalog of nearly 300 craters and crater-like objects has been prepared from several sets of contrast-enhanced high-quality positive transparencies of the Mariner 4 photography. Craters were identified and counted by the same procedures used in the compilation of lunar crater catalogs; particular attention was given to crater class and quality.
Elevation Differences on Mars
Contrary to the conclusions previously drawn, the polar-cap recession data suggest the dark areas are highlands, because of the greater wind velocities and frost-vaporization rates anticipated for highlands. From the quasi-specular component of the radar power reflectivity and from the radar Doppler spectra, both functions of Martian longitude, the Martian dark areas are found to tend to have systematically higher elevations than the adjacent bright areas. Mean slopes of a few degrees or less are deduced, and elevation differences up to 17 km are inferred.
Scientific and Technical Aerospace Reports
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
