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[Phys-L] Halfway point ???

Wimp.com posted this banner, with no explanation ==>

Today's Fun Fact: An average dust particle is the halfway point between the size of the Earth and the size of a proton.


Can anyone discern a “thought process” which makes this statement meaningful ?

Bob Sciamanda
Physics, Edinboro Univ of PA (Em)
treborsci@verizon.net
www.sciamanda.com