Frequently Asked Questions

All educational content here is built on open, public, freely-licensed sources — Wikipedia (CC BY-SA), NASA materials (US public domain), ESA / DLR / JAXA materials and imagery (free-use with credit / under their respective open terms), arXiv preprints, MIT OpenCourseWare, and open-source software docs such as ROS 2, PX4, ArduPilot, ODrive and Betaflight (Apache-2.0 / BSD / MIT). You can freely read, learn, and talk about these lessons and facts. However, real vehicles and products — for example SpaceX Falcon 9 / Starship, Boeing or Airbus aircraft, DJI drones, and Unitree robots — are proprietary designs owned by those companies. We only mention them by name as editorial facts about the industry; we never republish their copyrighted CAD files, blueprints, internal code, logos or manufacturing plans.