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In A Now Superseded Scientific Theory, Which Substance, Also Known As The Fifth Element Or Quintessence, Was Said To Permeate All Space And Was Used To Explain Both Gravity And The Movement Of Light? The Existence Of This Substance Was Discredited By The Null Result Of The Michelson-Morley Experiment In 1887.'''

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1. In A Now Superseded Scientific Theory, Which Substance, Also Known As The Fifth Element Or Quintessence, Was Said To Permeate All Space And Was Used To Explain Both Gravity And The Movement Of Light? The Existence Of This Substance Was Discredited By The Null Result Of The Michelson-Morley Experiment In 1887.'''





 
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