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Nature 442, 660-663 (10 August 2006) | doi:10.1038/nature04941;
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Chair, Department of Informatic Medicine and Personalized Health
- University of Missouri-Kansas City
- Kansas City, Missouri, USA
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- Torrey Pines Institute for Molecular Studies
- Port St. Lucie, FL
Occultation of X-rays from Scorpius X-1 by small trans-neptunian objects
Since the discovery of the trans-neptunian objects (TNOs) in 1992, nearly one thousand new members have been added to our Solar System, several of which are as big as—or even larger than—Pluto. The properties of the population of TNOs, such as the size distribution and the total number, are valuable information for understanding the formation of the Solar System, but direct observation is only possible for larger objects with diameters above several tens of kilometres.
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