Add planets and other objects to your solar system
Closest to the sun, extreme temperatures
Hottest planet, thick atmosphere
Perfect for life, liquid water
Red planet, polar ice caps
Largest planet, Great Red Spot
Beautiful ring system
Tilted on its side, methane atmosphere
Windiest planet, deep blue color
Former ninth planet, icy surface
Largest asteroid, water ice
Earth's cousin, potentially habitable
Hot Jupiter, evaporating atmosphere
Click "Add to System" to place a celestial body in your solar system. Drag planets to adjust their orbits, and use the controls to customize properties.
Watch realistic orbital mechanics in action. Adjust speed to observe gravitational interactions over time.