在宇宙行走, 沒有了持續的動力最終會否停止行走呢?

通常人們的答案會是不停的前進的，但實際中是沒有了持續的動力最終是會停止行走的，因為就算我們假設沒有遇上黑洞呀、恆星呀果D可以吸我們埋去，而最終令我們停止的前進的障礙，只要我們一有一個初速的話，一定會有很多與我們前進方向相反的宇宙粒子和宇宙射線阻止我們前進的，那怕力量很細，但日子有功我們一定會給停下來的，始終我們在這個宇宙中怎可獨善其身呢？

This is my comment and i did not copy from anyone, i think in the outer space if there are no another unbalanced force, the object will still stop at some time, because there are some particles outer space, it will act like air particles but in different scales, it will provide friction to the object and let it stop eventually!
This is an example, there are alot of rocks in outer space, why there are stop moving, if the sciencist said the space is from a big bang, so all the objects will be moving away from that point, but they finally stopped, so it means the object will stop after a long period of time!

2006-12-23 18:59:05 補充：
I know my comment will be a little bit sounds the same as above, but this my idea, so i am not copying from you!