Talk:United Aerospace Command/@comment-11135771-20141201151645/@comment-11135771-20141201155637

The doomsday shells cause small portions of the cloud to drift apart (remember that explosion's shockwave won't propagate in vacuum, so only a tiny area is affected). Scans show that the cloud is in fact a field of trillions of ice crystals, moving at sufficient speed to cause significant damage to ships. At current velocities, the cloud is around two days away from reaching Ceres, and moving at an average velocity of approximately 50km/s.