No, it is simply the smallest measurable size, according to the Heisenberg Uncertainty Principal.
"Though parted by a gulf more impassable than any sea, the telescope lets us traverse what otherwise had been barred and lands us at last above the shores we went forth to seek. Real the journey is, though incorporeal in kind. Since the seeing strange sights is the essence of all far wanderings, it is as truly tavel so the eye arrive as if the body kept it company." Pervcival Lowell