Build Your Planet

Pick your Density (g/cm³)

What will your planet be made of? Lots of dense metals like iron? Or lighter rocks like silicate?

Density is defined as p = m/V (mass / Volume), meaning the amount of mass you have in a given space. For reference, the density of iron is 7.8 g/cm3 while the density of silicate rock is between 2.0 and 4.5 g/cm3 (depending on structure).

4 g/cm³ 5.5 g/cm³

Pick your Radius (km)

How big will your planet be? Do you want to build a small planet like Mercury or something much larger?

The radius of a sphere is the distance from the centre to the edge. Chang- ing the radius will change how big the sphere is, which will also affect the volume of your planet.

This combination of density and radius determines the volume and struc- ture of the planet you are designing. It will aect things like how hot is the planet, what will the surface look like, how will the planet's internal dynam- ics behave? Think about these questions as you select values and proceed to generate your own planet.

3000 km 6000 km <

Build!

Select options from the drop down menus above and see what type of planet you create!