According to Osho, the 'cosmic circle' is the whole, an indivisible continuum where energy moves from center (consciousness) to circumference (matter) and back. Atoms belong to the circumference—the most crystallized, peripheral expression of the same life-force. Material existence is only the outer ring of this circle; its significance is to point you back to the silent center where separation dissolves and mystery becomes living experience.
Everything from atoms to stars is one circle: matter is the outer edge, your awareness is the center.