Technical Comments

Response to Comment on "Ancient Asteroids Enriched in Refractory Inclusions"

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Science  14 Nov 2008:
Vol. 322, Issue 5904, pp. 1050
DOI: 10.1126/science.1161585

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Although the exact abundance of phases in carbonaceous chondrites remains debatable, a potentially lower absolute abundance of calcium- and aluminum-rich inclusions (CAIs) in the Allende meteorite does not change our fundamental conclusion. In a relative comparison, CAI-rich asteroids contain two to three times as many CAIs as the most CAI-rich meteorites. These asteroids are therefore greatly enriched in the earliest solar system materials and remain enticing targets for future exploration.

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