Which components are part of the guidance system in rockets?

The guidance system in rockets is essential for determining the spacecraft's orientation and maintaining its trajectory during flight. The correct answer encompasses critical components that work together to effectively control and navigate the rocket.

A computer is a fundamental part of the guidance system as it processes data and executes commands to adjust the rocket's flight path in real time. It interprets signals from various sensors and makes calculations necessary for navigation.

An inertial platform serves as a type of sensor that measures the rocket's acceleration and rotation. This information helps the guidance system to determine the current position and velocity of the rocket without relying on external references, which is crucial for mid-course corrections and achieving precise trajectories.

A star-tracking unit is another important component that helps stabilize the rocket's course. By identifying and tracking stars, this unit provides external positional data that can be used to correct any discrepancies between the rocket's actual trajectory and the desired one.

In contrast, other options contain elements that do not contribute to the rocket's guidance system directly. For instance, propulsion units and fuel tanks are involved in the rocket's thrust and fuel management but do not assist in navigation or guidance. A control panel, while integral to the user interface, does not constitute a guidance element itself.

Hence, the combination of