CosmosForge

Astrophysics has rich personification affordances — gravity already feels like a relentless tug, galaxies already feel like swirling dancers, nebulae like soft veils.

Level 1

Explore the cosmos

Four interactive tools — three rebuilt from the iOS app, plus one you can only do here.

Name That Constellation ✨ new See a real star pattern, connect the dots to trace the figure, then name it — the Big Dipper, Orion, Cassiopeia, Cygnus, Leo, the Southern Cross and more. Stellar Evolution Step through a star's ten life stages — then race the clock to put the lifecycle in order and see how a star's fate branches on its mass. Black Hole Explorer Drag the mass and watch the event horizon grow. Move an observer inward and feel gravity stretch time — with the real physics behind Sagittarius A* and M87*. Cosmic Distance Ladder How do we know how far away anything is? Climb the four techniques — from geometry next door to redshift at the edge of the observable universe.

Practice the concepts

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

Kit 1: Our Solar System Solar System · grades 4-5 · 25 questions Kit 2: Stars & Constellations Stars · grades 4-5 · 25 questions Kit 3: Earth Moon Sun System Solar System · grades 4-5 · 25 questions Kit 4: Space Exploration & Technology Space Exploration · grades 5-6 · 25 questions Kit 5: Gravity & Orbits Gravity & Orbits · grades 5-6 · 25 questions Kit 6: Galaxies & the Universe Galaxies & Cosmology · grades 6-7 · 25 questions Kit 7: Stellar Life Cycles Stars · grades 6-7 · 25 questions Kit 8: Cosmology & Big Bang Galaxies & Cosmology · grades 7-8 · 25 questions Kit 9: Galaxies & Deep Space Galaxies & Cosmology · grades 6-8 · 25 questions Kit 10: Stellar Life Cycles Stars · grades 6-8 · 25 questions Kit 11: Exoplanets & Habitability Space Exploration · grades 6-8 · 25 questions Kit 12: Space Technology & Exploration Space Exploration · grades 6-8 · 25 questions Kit 13: Cross-Topic Connections Solar System · grades 5-6 · 25 questions Kit 14: Real-World Applications Space Exploration · grades 6-7 · 25 questions Kit 15: Misconceptions & Reasoning Solar System · grades 6-7 · 25 questions Kit 16: Advanced Synthesis Solar System · grades 7-8 · 25 questions
CosmosForge 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.

Explore all the stories →

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