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Extraterrestrial Optical Microscopy

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Abstract

An examination of the literature concerned with the use of microscopy for planetary investigation reveals a serious deficiency of current efforts. Many scientists have recommended the use of a microscope for planetary investigation [ Biology and the Exploration of Mars, C. S. Pittendrigh, W. Vishniac, and J. P. T. Pearman, Eds. ( National Academy of Science–National Research Council, Washington, D. C., 1966), (a)D. Mazia, p. 31; (b)J. Lederberg, p. 137; (c)S. Fox, pp. 219, 226; (d)D. Glaser, p. 326; (e)D. Glaser, J. McCarthy, and M. Minsky, pp. 333, 341; (f)D. G. Rea, pp. 347– 426; (g)P. G. Conger, pp. 409– 414; (h)M. H. Fernandez, pp. 414– 425; (i)D. Schwartz, pp. 425– 426. H. P. Klein, Some Biological Problems in the Search for Extraterrestrial Life ( American Astronautical Society, Washington, D. C., 1968).] but few are involved in developing the experiment. Since this is a particularly timely period for the preparation of planetary lander experiments, the reasons for this lack of effort would appear to be limited resources or an unclear course of action, rather than lack of interest. Microscopy used for planetary investigation is chiefly the interest of the biologist and the mineralogist. In both cases the desire to use magnifying optics in order to observe objects of submillimeter size is based upon the rich body of knowledge we have acquired from observing the terrestrial microcosm. In addition to purely imaging, certain special optical techniques, e.g., polarimetry, colorimetry, phase contrast, etc., can be used to enhance the interpretation of microscopic imaging data. This interaction of the optical with the chemical or structural aspects of nature can be used to great advantage in the exploration of extraterrestrial biology and mineralogy.

© 1969 Optical Society of America

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