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Solar composition from the Genesis Discovery Mission

  1. Genesis Science Team2
  1. Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125
  1. Edited by Mark H. Thiemens, University of California, La Jolla, CA, and approved March 18, 2011 (received for review October 8, 2010)

Abstract

Science results from the Genesis Mission illustrate the major advantages of sample return missions. (i) Important results not otherwise obtainable except by analysis in terrestrial laboratories: the isotopic compositions of O, N, and noble gases differ in the Sun from other inner solar system objects. The N isotopic composition is the same as that of Jupiter. Genesis has resolved discrepancies in the noble gas data from solar wind implanted in lunar soils. (ii) The most advanced analytical instruments have been applied to Genesis samples, including some developed specifically for the mission. (iii) The N isotope result has been replicated with four different instruments.

Footnotes

  • Author contributions: D.S.B. and G.S.T. designed research; D.S.B. and G.S.T. performed research; G.S.T. contributed new reagents/analytic tools; D.S.B. and G.S.T. analyzed data; and D.S.B. and G.S.T. wrote the paper.

  • The authors declare no conflict of interest.

  • This article is a PNAS Direct Submission.

  • This article contains supporting information online at www.danielhellerman.com/lookup/suppl/doi:10.1073/pnas.1014877108/-/DCSupplemental.

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