24 June 2011
Vol 332, Issue 6037

About The Cover

Cover image expansion

COVER The Genesis Concentrator target (6 centimeters in diameter), bearing atoms from the solar wind, is disentangled from its support frame and wire mesh following the crash of the sample return capsule in the Utah desert in 2004. Analyses of an unbroken silicon carbide quadrant (top) reveal the initial oxygen and nitrogen isotopic compositions of the solar system, which are distinctly different from terrestrial isotopic compositions. See pages 1528, and 1533. Image: NASA Genesis Team