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Old 01-26-2019, 04:00 PM   #4669 (permalink)
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Lunar spherules

Asteroid impacts can liquify silicate rock,which,when lofted,solidifies in the form of a sphere and rain out.
Termed 'spherules' by geologists,these structures have been found in at least a dozen beds worldwide,dating from 1.8-to-3.7-billion years ago.
And geologists believe Earth has undergone at least 70-collisions of asteroids as large as the 6-mile-wide asteroid which struck the Yucatan Peninsula,65-million years ago.
Space around our solar system is populated with intersteller material which reaches to the galactic center.
It's quite possible for material to enter the solar system,traveling at up to 69,000-mph and 'dock' with the Moon,settling to the surface without a collision and just sit there for billions of years.This would include spherules.
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