Several spectrometers carried in the Service Module of the Apollo 15 and Apollo 16 spacecraft were employed for the compositional mapping of the lunar surface. The observations involved the measurements of secondary (fluorescent) X-rays, gamma rays and alpha particle emissions. A large scale compositional map of over 20 percent of the lunar surface was obtained for the first time. It was possible to demonstrate interesting chemical differences between the mare and the highlands, to find specific areas of high radioactivity and to learn something about the composition of the moon's hidden side. Further the same devices were used to obtain useful astronomical data during the return to earth.


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    Title :

    Lunar composition from Apollo orbital measurements


    Contributors:
    Adler, I. (author) / Trombka, J. I. (author) / Yin, L. I. (author) / Gorenstein, P. (author) / Bjorkholm, P. (author) / Gerald, J. (author)

    Publication date :

    1972-09-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English


    Keywords :


    Lunar Composition from APOLLO Orbital Measurements

    I. Adler / J. I. Trombka / L. I. Yin et al. | NTIS | 1972


    Lunar composition from Apollo orbital measurements.

    Adler, I. / Trombka, J. I. | NTRS | 1973


    Lunar orbital gamma ray measurements from Apollo 15 and Apollo 16.

    Arnold, J. R. / Peterson, L. E. / Reedy, R. C. et al. | NTRS | 1973


    Apollo lunar orbital science.

    Roberson, F. I. / Esenwein, G. F. | NTRS | 1972


    Lunar Orbital Rendezvous for Apollo

    Cummings, Clifford I. / Lawrence, Harold R. | AIAA | 1963