Contents

01 May 2009
Vol 324, Issue 5927

About The Cover

Cover image expansion

COVER A mosaic of images collected as the MESSENGER spacecraft viewed Mercury obliquely on approach on 6 October 2008. The Rembrandt impact basin, 715 kilometers in diameter, is seen at the center as night falls across its eastern edge. Results from the flyby are discussed in four Reports beginning on page 606 and a Perspective on page 597. Image: NASA/Johns Hopkins University Applied Physics Laboratory/Arizona State University/Carnegie Institution of Washington