Cover Picture: Astron. Nachr. 9/2013

The collision of a basalt asteroid with a water-ice projectile simulated with a 3D SPH code. The damage pattern 0.6 ms after the impact is plotted (see T.L. Maindl et al., this issue, p. 996). (© 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)