Interferometric Examination of Small Glassy Spherules and Related Objects in a 5-Gram Lunar Dust Sample

Details Interferometric Examination of Small Glassy Spherules and Related Objects in a 5-Gram Lunar Dust Sample Interferometric Examination of Small Glassy Spherules and Related Objects in a 5-Gram Lunar Dust Sample

Jan 1970

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970sci...167..742t&link_type=abstract

Science, Volume 167, Issue 3918, pp. 742-743

Physics

6

Scientific paper

Over two hundred spherules and cylinders were extracted from the lunar dust sample. Sizes ranged from 0.75 to 0.03 millimeters, and most were shiny glassy objects, which were studied by interferometry. This study reveals very high specular reflection, frequent perfect sphericity, and clear evidence in some objects of microcracking and microchipping. Many spheres were once projectiles. Some have impacted in free flight with much smaller pieces of rocky material, which embedded in the surface. It is conjectured that the glassy spherules originated as a gas-blown shower from a pool of molten glass.

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