Travel from Earth to the Moon and achieve a stable lunar orbit. Your first journey to another celestial body!
Discover the relationship between orbital energy, speed, and altitude. Learn why you move faster when you're closer to the planet.
The ultimate challenge: perform a complete mission from Earth to Saturn orbit with an absurdly limited fuel budget. Use every trick in the book - gravity assists, aerobraking, low-energy transfers, and perfect timing.
Learn what an orbit actually is and why objects stay in orbit instead of falling down. Discover the fundamental relationship between velocity and gravity.
Understand the six cardinal directions in space: prograde, retrograde, normal, anti-normal, radial, and anti-radial. Learn how velocity changes affect your orbit.
Learn how different burns at different positions affect your orbit. Understand the fundamental principle: you change the opposite side of your orbit.
Learn to make perfect circular orbits by matching your periapsis and apoapsis. This essential skill is needed for stable orbits and rendezvous.
Deep dive into the two most important points in your orbit. Learn to use them strategically for efficient maneuvering.
Learn how orbital period relates to altitude. Understand Kepler's Third Law and how to calculate when you'll arrive somewhere.