Lessons

The physics is real. Hohmann transfers, gravity assists, orbital precession — learn it here, then prove it in the sim.

1

Foundations of Spaceflight

1.1 Understanding Orbits

1.2 Velocity and Direction

1.4 Basic Orbit Changes

2

Orbital Mechanics Basics

2.5 Orbital Energy and Speed

2.7 Circularization

2.8 Understanding Apoapsis and Periapsis

2.9 Time and Orbital Period

2.10 Eccentricity and Orbit Shapes

3

Maneuvers & Transfers

3.16 Delta-V Budgets

4

Advanced Orbits

4.18 Plane Change Maneuvers

6

Multi-Body Problems

6.28 Phasing Orbits