27 September 2013
Vol 341, Issue 6153

About The Cover

Cover image expansion

COVER NASA's Mars Science Laboratory rover, Curiosity, at its Rocknest sample-collection site, Gale crater, Mars, on 31 October 2012. This is a mosaic of 59 images acquired by the Mars Hand Lens Imager, a camera mounted at the end of Curiosity's robotic arm (both partly not visible during imaging and cropped out during processing). Four scoop troughs are shown; a fifth was created after the mosaic was obtained. The width of each rover wheel is 40 cm. See page 1475. Image: NASA/JPL-Caltech/Malin Space Science Systems