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Introductory essays by Viking Project scientist Gerald A. Soffen and Viking Orbiter scientist Conway W. Snyder describe the project, the spacecraft, selection of the Martian landing sites, and the experiments undertaken. The rest of the papers are by scientists involved in the project and comprise a record of the data obtained, the experiments, and their evaluation.
More than 50 years after the Mariner 4 flyby on 15 July 1965, Mars still represents the next frontier of space explorations. Of particular focus nowadays is crewed missions to the red planet. Over three sections, this book explores missions to Mars, in situ operations, and human-rated missions. Chapters address elements of design and possible psychological effects related to human-rated missions. The information contained herein will allow for the development of safe and efficient exploration missions to Mars.
Focusing on men from old families in England’s Wirral and West Lancashire regions, this survey traces the DNA of the local populace back to their Viking ancestors in order to determine the impact of past societies on their genetic make-up. Arguing that the areas exhibit many archaeological and historical features proving them to have had a clear Viking presence, this account provides background information on Viking settlements as well as conclusions drawn from the DNA testing. An illustrated example of how DNA methods can be used to learn about the past is also included.