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Interactive simulations, clear explanations, and practice questions for major space topic. From beginner basics to advanced astronomy.

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Missionshands-on challenges
Worksheetsprintable practice packs

Middle School

Core space content most students are expected to learn.

πŸŒ™ Moon Phases

Teaches why phases happen and how to identify waxing/waning phases.

Free
πŸŒ™ Gravity Basics

Teaches mass vs weight and how gravity depends on mass and distance.

Free
🧲 Magnetism

Teaches magnetic field lines, poles, and how field strength changes with distance.

Free
πŸ§ͺ Periodic Table Challenge

Sort all 118 elements into their correct positions on the periodic table.

Free
βš—οΈ Physical vs Chemical Changes

Sort examples into physical or chemical changes and learn the science behind each.

Free
βš›οΈ Build an Atom

Add protons, neutrons, and electrons to create any element with a 3D rotating atom visualization.

Free
πŸ₯½ Lab Safety

Navigate lab scenarios and learn safe practices through realistic consequences.

Free
πŸ”¬ The Scientific Method

Analyze famous discoveries and identify the 7 steps scientists use to answer questions.

Pro
🌈 Light & Color

Mix RGB lights, split white light through prisms, and discover why the sky is blue.

Free
πŸͺ¨ Rock Classification

Examine rock samples and identify them as igneous, sedimentary, or metamorphic.

Pro
🧭 Seasons

Teaches why seasons happen: Earth's tilt changes sunlight angle and day length (not distance from the Sun).

Pro
🌊 Tides

Teaches why tides happen and how the Moon and Sun affect high and low tides.

Pro
πŸͺ Solar System Map

Teaches planet order, inner vs outer planets, dwarf planets, and asteroid/Kuiper belts.

Pro

High School

More math/physics connections and deeper astronomy ideas.

πŸ“ Space Scale & Distance

Teaches AU vs light-year and how astronomers measure space distances with parallax, radar, and more.

Pro
🌈 Light & Spectra

Teaches wavelength, spectra, and how scientists identify elements in stars.

Pro
⭐ Star Life Cycles (Advanced)

Teaches fusion, the H–R diagram, and how mass controls how a star evolves.

Pro
πŸ”₯ Friction & Forces

Teaches how friction opposes motion, the difference between static and kinetic friction, and how surfaces affect friction forces.

Pro
πŸ’¨ Aerodynamics Simulator

Draw shapes and visualize airflow with particles and streamlines. Calculate drag, lift, and Reynolds number in real-time.

Pro