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EPOXI at comet Hartley 2

Michael F A'Hearn et al. Science. .

Erratum in

  • Science. 2011 Sep 9;333(6048):1381. Kelley, Michael S [added]
  • Science. 2012 Feb 24;335(6071):918

Abstract

Understanding how comets work--what drives their activity--is crucial to the use of comets in studying the early solar system. EPOXI (Extrasolar Planet Observation and Deep Impact Extended Investigation) flew past comet 103P/Hartley 2, one with an unusually small but very active nucleus, taking both images and spectra. Unlike large, relatively inactive nuclei, this nucleus is outgassing primarily because of CO(2), which drags chunks of ice out of the nucleus. It also shows substantial differences in the relative abundance of volatiles from various parts of the nucleus.

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