  To reveal the formation of planetesimals it is of great importance to
understand the collision behavior of the dusty and icy aggregates they have
formed from. We present an experimental setup to investigate the aggregation
properties in low-velocity collisions of dust aggregates, solid ices and icy
aggregates under microgravity conditions. Results from ESA's 45th Parabolic
Flight Campaign show that most collisions in the velocity range 0.1 m/s < v_c <
0.5m/s are dominated by a rebound behavior of the projectile dust aggregates
and only ~ 5% of the translational kinetic energy is conserved after the
encounters.
