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Science 5 May 2006:
Vol. 312. no. 5774, p. 653
DOI: 10.1126/science.312.5774.653d
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This Week in Science

Figure 1 Interplanetary dust particles are particularly carbon rich, and are thought to have their origins outside the solar system in interstellar material and comets. This primitive material was thought to have been largely lost in more heavily processed meteorites. Using hydrogen and nitrogen isotopes, Busemann et al. (p. 727; see the Perspective by Marty) show that the organic matter in carbonaceous meteorites is as primitive as that in the dust grains. These results imply that temperatures of the protosolar nebula in the region of the asteroid belt were low and that the meteoritic material has suffered little alteration since then.

CREDIT: BUSEMANN ET AL.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)