The Earth
The Solar System & Time
Charts
Using Aeronautical Charts
Basics of Navigation
Distance, Speed & Time
Vertical Navigation
Fuel Planning
Practical Navigation Techniques
Radio Navigation
Practice Exam

The Solar System

Earth’s Orbit

The Earth orbits around the sun in an elliptical (oval) pattern, so its distance from the sun changes throughout the year.

The Earth’s axis is at an angle to its orbit. This axial tilt is the reason we have 4 seasons. During the northern hemisphere’s summer, the northern hemisphere is tilted towards the sun and during the southern hemisphere’s summer, the southern hemisphere is tilted towards the sun.