Part 2/14:
In fact, guns work perfectly well in the vacuum of space. The key lies in the chemistry of gunpowder. Modern powders contain all the oxidizers needed for combustion, making them self-sufficient. When ignited, they don’t need external oxygen—they carry their own in the chemical mixture. This means that, despite the vacuum, a gunshot would produce a loud bang and a bullet traveling at high velocity.
Moreover, without atmospheric drag, bullets fired in space could theoretically travel forever, orbiting planets or traversing millions of miles unless they collide with an object or fall under gravitational influence. However, there's a significant catch: recoil.