Research CommentariesPlanetary Science

New Insights on the Kuiper Belt

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Science  26 Jun 1998:
Vol. 280, Issue 5372, pp. 2071-2073
DOI: 10.1126/science.280.5372.2071

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The Kuiper belt is a region beyond the orbit of Neptune inhabited by small objects called planetesimals. The origins and structure of this population of objects are still unclear, but as Morbidelli discusses in his Research Commentary, new findings reported in the same issue by Ward and Hahn are contributing to our understanding of the Kuiper belt.