ya i was wondering that too, but what i mean was a collision, i noticed how small the detonation was when i crashed the moon into the earth once, bairly anything happend, i waited 2 minutes and there was no evidence that it happend, i tried to increase the particals to about 20 times, it did add more particals but it was basicly the same, no evidence of an explosion, no orbiting debree or anything. is there anyway i can make debree orbit longer or will there be a feature like that in US2 or US 2.1?