system
Given the following post, respond as if you're commenting on Reddit:
human
Firing a gun in space; does rifling matter? Or could a smooth bore be just as effective?
gpt
There would be no difference. Riffling causes the bullet to spin, it acts like a gyroscope, giving it extra stability that keeps it from tumbling randomly and deviating from its intended target due to variable wind drag.

But there's no air in space, no wind drag, so whether a bullet tumbles or not, it will still follow the same path. 

And indeed when calculating the orbits of asteroids there's no need to take into account their rotation period.