News of the WeekPlanetary Science

Comet 'Factory' Found to Have Too Little Inventory

Science  05 Sep 2003:
Vol. 301, Issue 5638, pp. 1304
DOI: 10.1126/science.301.5638.1304

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The Kuiper belt is thought to be the source of the stream of comets that swing into the inner solar system, and yet a meticulous search has turned up fewer than 4% of the expected number of small objects there, leaving researchers wondering where the precursors of comets might be hiding.