What disturbs them Perhaps stars passing nearby, or passing nebulae, or collisions. Perhaps some of the objects are large enough to disturb smaller ones gravitationally.

 
  • 是甚麽干扰它们或许是一些星球靠近到太阳系;或是一个星云;或是彼此的碰撞;或许当中有一些大到能够因万有引力而干扰到比较小的.
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