SCIENTIFIC OBJECTIVES: COMETS AND PRIMITIVE ASTEROIDS LOOSE MASS MOSTLY IN THE FORM OF LARGE CM-DM SIZED DUST GRAINS. MOST MASS IN THE ZODIACAL CLOUD IS IN THE FORM OF TINY 0.1-MM SIZED GRAINS. WHAT PROCESSES ARE RESPONSIBLE FOR TURNING ONE INTO THE OTHER? METHODS/TECHNIQUES: WE PROPOSE TO INVESTIGATE THE DYNAMICS OF EVOLVED METEOROID STREAMS THAT SHOW MOTION IN SUN-CENTERED ECLIPTIC COORDINATES OF THE RADIANT AS ENCOUNTERED AT EARTH. 18 SHORT-PERIOD JUPITER-FAMILY AND 27 LONG-PERIOD HALLEY-TYPE METEOROID STREAMS ARE KNOWN TO DO THIS. EACH STREAM HAS SIGNIFICANTLY EVOLVED BY GRAVITY FROM PLANETARY PERTURBATIONS OVER VARYING TIMESCALES FROM A FEW HUNDRED TO HUNDREDS OF THOUSANDS OF YEARS AND NOW HAS A DISPERSED DUST CLOUD THAT REFLECTS THIS DYNAMICAL EVOLUTION. AT THE SAME TIME GRAIN-GRAIN COLLISIONS OR DISRUPTIVE FORCES OTHER THAN COLLISIONS (SUCH AS THERMAL STRESSES AND HEATING COSMIC RAY HITS AND ELECTRIC CHARGING) WILL DISRUPT THE LARGE GRAINS INTO SMALLER GRAINS DECREASING THE DENSITY OF LARGE METEOROIDS OVER TIME. THE THEORETICAL MODELING PART OF THIS WORK WILL COMPARE THE EXPECTED SPATIAL DISTRIBUTIONS OF DUST FROM GRAVITY ALONE TO THOSE OBSERVED IN THE PRESENCE OF SUCH DISRUPTING PHENOMENA FROM LOW-LIGHT VIDEO OBSERVATIONS OF METEOR SHOWERS AND COMPARE THE EFFECT ON DIFFERENT TYPES OF METEOROID STREAMS TO UNDERSTAND WHAT PROCESSES ARE AT WORK. THE DATA ANALYSIS PART OF THIS WORK WILL ANALYZE AN EXISTING LARGE DATABASE OF METEOR SPECTRA TO INVESTIGATE THE LARGE GRAIN MAIN ELEMENT COMPOSITION OF THESE STREAMS TO STUDY HOW VOLATILE MINERALS ARE LOST OVER TIME. RELEVANCE TO THE SSW CALL: THE WORK ADDRESSES THE GOALS OF THE SOLAR SYSTEM WORKINGS PROGRAM BY SEEKING TO UNDERSTAND PROCESSES THAT OCCUR THROUGHOUT THE SOLAR SYSTEM SPECIFICALLY THE FUNDAMENTAL PROCESSES THAT DETERMINE THE EVOLUTION OF DUST GRAINS AFTER EJECTION. THE WORK WILL IDENTIFY AND CHARACTERIZE THE DUST POPULATIONS RELEASED FROM COMETS AND PRIMITIVE ASTEROIDS AND UNDERSTAND THEIR DYNAMICS WITHIN THE SOLAR SYSTEM. THE WORK IS RELEVANT TO NASA BY HELPING UNDERSTAND THE METEOROID IMPACT HAZARD TO SATELLITES AND THE DYNAMICAL PROPERTIES OF METEOROIDS IMPACTING PLANETARY SURFACES.