FIGURE 1. Diagram showing the Kuiper belt and Oort cloud to scale with our planetary system.

From the following article:

The evolution of comets in the Oort cloud and Kuiper belt

S. Alan Stern

Nature 424, 639-642(7 August 2003)

doi:10.1038/nature01725

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The huge scale of the Oort cloud can be appreciated by the fact that the nearest star is located only about three times farther from the Sun than the edge of the Oort cloud (that is, approx3 times 105 au from the Sun).

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