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...ly form of [[Cave painting|cave markings]] and drawings, [[calendar]]s and astronomical symbols. Then books and written records became the main source of informati ...previous models, thus, the early models are kept track of by intellectuals in astronomy, an extended progress from trying to perfect the [[Geocentric orb ...

...electron microscope]] (SEM) photo of a dust particle collected by [[NASA]] in the [[stratosphere]] together with its [[energy-dispersive X-ray spectrosco ...n in order to obtain information on the [[astronomical object]]s occurring in [[outer space]]. Dust astronomy overlaps with the fields of [[Planetary sci ...