Week in Space Data, every Friday.
Six tracks (Orbital Mechanics, Rocket Propulsion, Space Law, Supply Chain, Space Communications, and Space for Kids), with 6 courses and 29 lessons, built-in calculators and quizzes. Learn the math, the money and the policy behind every mission, from Kepler to the link budget to what a kilogram to orbit really costs.
Daily Space Puzzle · Tue, 20 Oct 2026
One space question a day with an official source behind the answer. Two tries. The same puzzle for everyone; a new one at 00:00 UTC.
Play today's puzzleKepler's laws, orbital elements, delta-v budgets, Hohmann transfers, rendezvous: the math and intuition behind every mission.
Rocket equation, specific impulse, chemical vs electric, staging, and cycle selection explained from first principles.
Outer Space Treaty, ITU frequency coordination, FCC filings, export control (ITAR/EAR) for commercial operators.
Space-qualified components, lead times, second sources, BOM risk, and sourcing strategies for flight hardware.
Link budgets, modulation, antenna gain, ground station selection, and latency for LEO, MEO, GEO systems.
Friendly explainers for young learners. Rockets, planets, astronauts, and the magic of orbit.
Try one of our DIY Build Guides: CanSats, high-altitude balloons, ISS pass receivers, weather stations and more.
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