26 August 2011
Vol 333, Issue 6046

About The Cover

Cover image expansion

COVER False-colored backscattered electron image of a small rocky particle, 150 micrometers in size, recovered from the surface of near-Earth asteroid 25143 Itokawa by the Japanese spacecraft Hayabusa. Mineralogy and chemistry of the particle indicate that the asteroid consists of very primitive solar system material and has had a complex formation history. See the series of Reports beginning on p. 1113. Image: Japanese Aerospace Exploration Agency