Ancient asteroids kept on coming

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Comment on "ancient asteroids enriched in refractory inclusions".

Sunshine et al. (Reports, 25 April 2008, p. 514) reported that certain asteroids contain 30 +/- 10 volume percent calcium- and aluminum-rich inclusions (CAIs). We contend that the amount of CAIs in CV chondrites is two to three times as low as the 10 volume percent assumed by the authors; thus, we question whether the CAI-rich bodies they studied are indeed older than known asteroids or formed ...

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ژورنال

عنوان ژورنال: Nature

سال: 2012

ISSN: 0028-0836,1476-4687

DOI: 10.1038/484429a