StarForge

A voyage through the solar system — fly the orbit map, open the Discovery Codex for every planet, and predict what the sky will do before you see it. Your stellar guides show you how a star is born, grows, and fades.

Level 1

For grown-ups — progress report →A private, on-device snapshot mapped to the skill areas practiced. Export a CSV or print — nothing leaves this device.

Explore & experiment

Two hands-on labs — one rebuilt from the app, plus one you can only do here.

Solar System Explorer Tap any planet on the orbit map to open its Discovery Codex — real diameter, gravity, day and year length, moons and more — then take a quick mission challenge for that world. Orbit & Phase Lab ✨ new Predict the Moon's phase from where it sits in its orbit — then see the real answer and why. (Hint: it's the Sun–Moon–Earth angle, not Earth's shadow.) Predict your weight on other worlds, too.

Practice the concepts

16 kits from our own solar system out to the edge of the universe — a short round of questions with a hint whenever you get stuck. Your progress stays on this device.

Solar system, the Sun & gravity

Kit 1: Solar System: Planets & Moons grades 4-5 · 25 questions Kit 5: Space Exploration & Technology grades 5-6 · 25 questions Kit 6: Gravity, Orbits & Kepler's Laws grades 6-7 · 25 questions Kit 10: The Sun & Solar Activity grades 6-8 · 25 questions

Stars, light & telescopes

Kit 2: Stars & Constellations grades 4-5 · 25 questions Kit 3: Stellar Life Cycles grades 5-6 · 25 questions Kit 7: Light, Spectra & Telescopes grades 6-7 · 25 questions Kit 9: Telescopes & Observational Astronomy grades 6-8 · 25 questions

Galaxies & cosmology

Kit 4: Galaxies & the Universe grades 5-6 · 25 questions Kit 8: Cosmology & the Big Bang grades 7-8 · 25 questions Kit 11: Cosmology & the Universe grades 6-8 · 25 questions Kit 12: Space Careers & Modern Astronomy grades 6-8 · 25 questions

Connections & reasoning

Kit 13: Cross-Topic Connections grades 4-5 · 25 questions Kit 14: Real-World Applications grades 4-5 · 25 questions Kit 15: Misconceptions & Reasoning grades 4-5 · 25 questions Kit 16: Advanced Synthesis grades 4-5 · 25 questions

Play together

Go head-to-head with a friend — same device or an online room.

StarForge Duel (pass-and-play) 2–4 players take turns on one device — same questions, highest first-try score wins. Or open an online room to play a friend on another device. StarForge Journey — follow the map → A path through every kit. Clear each stop, then move on — see how far you’ve come.

Mixed practice

Mixed practice — revisit what you've learned A short round that shuffles questions from the kits you've played, brought back when they're ready to review. Great for making it stick.
StarForge mascot

Meet the cast — the characters who teach this

Each one stands for an idea you’ll practice. Tap a character to read their illustrated story and hear their audio drama.

Ensemble stories — the cast together

Explore all the stories →

📚 Books for StarForge

Read the story, print a workbook, or color the cast — free PDFs to read offline or print at home.

Browse all books →

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