🌍 Earth🚀 Missions🔭 Observatory 🎓 EdTech💼 Startup📊 Data Center
1
Self-paced, not scheduled

No live cohort dates — start a course whenever it fits a unit you're teaching or a topic you're curious about.

2
Simulations, not just slides

Students move the sliders themselves in the orbital transfer and thrust-to-weight tools below — the numbers actually respond.

3
Free reference downloads

The library section has a printable cheat sheet and glossary you can hand out without an account.

Courses

Start Learning

Beginner
Earth photographed from space

Orbital Mechanics for Beginners

Understand gravity wells, transfer orbits, and delta-v with interactive simulations.

6 weeks12,400 students
Intermediate
Rocket launch

Rocket Propulsion Fundamentals

From Tsiolkovsky's equation to modern methalox engines.

4 weeks8,120 students
Advanced
Orion Nebula, imaged by the Hubble Space Telescope

Reading Astronomical Data

Learn to interpret spectra, light curves, and telescope survey data.

2 weeks3,050 students

Try It Yourself

Interactive Simulations

🪐 Orbital Transfer Simulation (drag to adjust velocity)
🚀 Thrust-to-Weight Ratio Simulator

Library

Resources

📄 Orbital Mechanics Cheat Sheet

📘 Glossary of Spaceflight Terms

🎥 Rocket Launch Physics (Video)

🧮 Delta-V Budget Calculator