Question

The orbits of Neptune and Pluto cross each other, so will they collide?

Answer 1

The size of the orbits are different and the speeds of the planets are also different. Planets do slow down but take time to do so. According to the present trend they wouldn't do so for a large amount of time but will do so in the future .

Answer 2

First,we need to understand how the planets move . Since the planets are slightly different in the height of the orbit,the answer is 'NO'they won't collide.