Why do missiles have fins, while modern space rockets don’t?

Question

Why do missiles have fins, while modern space rockets don’t?

In: 258

Answer 1

For a rocket to remain stable, the center of pressure needs to be below the center of gravity, and fins do this. Modern rockets like space-x use thrusters on a gimbal and perpendicular thrusters which also work outside of the atmosphere. There, now we are all rocket scientists.