标题： 太阳系是稳定的吗？ 显示英文标题

标题： Is the Solar System Stable ?

摘要： 自牛顿提出这一问题以来，在三百年的时间里，天文学家和数学家一直在寻求证明太阳系的稳定性。 多亏了近二十年来的数值实验，我们现在知道，太阳系内行星的运动是混沌的，这使得它们的轨道在数千万年之后便无法被准确预测。 最近的模拟甚至表明，在不到五十亿年的时间内，也就是太阳生命结束之前，可能发生行星碰撞或者行星被弹出太阳系的情况。 显示英文摘要

摘要： Since the formulation of the problem by Newton, and during three centuries, astronomers and mathematicians have sought to demonstrate the stability of the Solar System. Thanks to the numerical experiments of the last two decades, we know now that the motion of the planets in the Solar System is chaotic, which prohibits any accurate prediction of their trajectories beyond a few tens of millions of years. The recent simulations even show that planetary collisions or ejections are possible on a period of less than 5 billion years, before the end of the life of the Sun.