Final Report for award number NNX14AT50G Dates covered by this report: 09/19/2014 to 03/31/2019 Proposal Title: Deep mapping of small solar system bodies with galactic cosmic ray secondary particle showers Principal Investigator: Thomas H. Prettyman Institution/address: Planetary Science Institute 1700 E. Fort Lowell Road, Suite 106 Tucson, AZ 85719 Email:
[email protected] 1 Deep mapping of small solar system bodies with galactic cosmic ray secondary particle showers T. H. Prettyman,1 A. Empl,2 L. S. Pinsky,2 M. V. Sykes1, and M. C. Nolan3 1Planetary Science Institute, Tucson AZ 2University of Houston, Houston TX 3University of Arizona, Tucson AZ Grant #NNX14AT50G NASA Innovative Advanced Concepts Space Technology Mission Directorate 2 x Table of Contents Summary of originally proposed research ...................................................................................... 4 Background: A brief history of muography .................................................................................... 5 Introduction ..................................................................................................................................... 7 Significance of small body interiors ............................................................................................... 8 Mapping small body interiors – Some alternatives....................................................................... 17 Muography of asteroids and comets ............................................................................................. 18