But 13 year-old Nico Marquardt from Potsdam used open source software to find that the probability actually rises to 450 to 1 because it may hit a manmade satellite.

• 但13岁的尼克麦夸尔特从波茨坦公告使用开放源码软件发现的概率，其实上升到450比1 ，因为它可能触及的人工卫星。