有一些还未被美国宇航局近地天体计划发现的小行星，很有可能会撞击我们的地球，一个被称为1950 DA的现象很有可能在2880年出现。
None of the objects yet discovered by NASA's Near earth objects program have a high probability of hitting the earth — though one known as 1950 DA will come extremely close in 2880.
这样就会有足够的时间想出计划来迎接不可避免的仙女座星系在45亿年后的撞击。
That should give enough time to figure out a plan for the inevitable Andromeda galaxy collision in 4.
去年10月9日，火箭按计划成功撞击到月球坑，坑底产生了一个直径为70-100英尺、6英尺深的大洞。
When the rocket struck the bottom of the crater on October 9 last year it blasted out a hole 70ft to 100ft indiameter and 6ft deep.
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