Which navigation method relies on the natural view of the sky?

Visual navigation is a method that relies on the pilot's ability to interpret the natural view of the sky and the terrain beneath them. This approach uses visual cues, such as landmarks, geographical features, and celestial bodies, to determine the aircraft's position and heading. Pilots typically utilize this method in favorable weather conditions with good visibility, allowing them to effectively navigate by sight.

In contrast, inertial navigation relies on onboard sensors to calculate position based on acceleration and rotation, which means it does not involve visual references from the sky. Radio navigation utilizes signals transmitted from radio stations to determine the aircraft's position, while instrument navigation depends on flight instruments within the cockpit, often guiding pilots without reference to the outside environment. These methods are valuable in various conditions, but they do not utilize the natural view like visual navigation does.