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9-Point Circle Action (Part 2)

Interact with the applet below for a few minutes. Then answer the question that follows. It is assumed that you know how to describe each of the 9 black points in the applet below. Point C is the circumcenter of the triangle.Point O is the orthocenter of the triangle. If you do not remember how to describe any one (or more) of the 9 black points, it may help to refer to the 9-Point Circle (Part 1) worksheet, which can be found here.
Question: How does the radius of the triangle's circumcircle compare with the radius of its 9-point circle?