Don't just read about it. Do it.
12 hands-on simulations across space, Earth, chemistry and biology. Pull the levers, break things, and watch the science answer back.
Choose a field
Four realms, each with its own atmosphere and set of experiments.
Popular simulations
Solar System
Speed up time and watch gravity keep eight worlds in orbit.
Cosmic Weigh-In
Type in your weight and find out what the scales say on Mars.
Moon Phases
Scrub through a lunar month and see why the Moon changes shape.
Size Comparison
Line up any planets side by side and see the real scale.
Eclipses
Move the Moon's orbit and line up the shadows yourself.
Black Hole
Turn up the mass and watch starlight bend around the void.
Every experiment
Solar System
Speed up time and watch gravity keep eight worlds in orbit.
Cosmic Weigh-In
Type in your weight and find out what the scales say on Mars.
Moon Phases
Scrub through a lunar month and see why the Moon changes shape.
Size Comparison
Line up any planets side by side and see the real scale.
Eclipses
Move the Moon's orbit and line up the shadows yourself.
Black Hole
Turn up the mass and watch starlight bend around the void.
Volcano
Build pressure, add gas, thicken the magma — then trigger it.
Water Cycle
Turn up the heat and drive evaporation, clouds and rain.
Weather Lab
Mix temperature, humidity and wind to brew your own storm.
Ocean Depths
Descend from sunlight to crushing dark, one zone at a time.
Density Tower
Drop objects into stacked liquids and find where they settle.
Human Body
Tap any organ and find out what it does all day.