Explore the scale of the cosmos
Two objects. One scale. Choose any pair. Compare their diameters, line them up, or build a miniature version.
Start withCeres Pluto Moon Mercury Ganymede Mars Venus Earth Neptune Uranus Saturn Jupiter Sun Betelgeuse ⇄ Compare withCeres Pluto Moon Mercury Ganymede Mars Venus Earth Neptune Uranus Saturn Jupiter Sun Betelgeuse Compare with Earth
One scale. Two worlds. True diameter scale
Earth and Jupiter to scale Their diameters differ by a factor of 10.973. Illustrations show body diameter, not separation in space.
Body diameters to scale. Positions and surface artwork are illustrative; Saturn’s rings are excluded.
Side by side How many across?
Copy this comparison ↗
A change of perspective
10.973× the diameter. See how the two worlds measure up.
Diameter is a distance across an object. Volume grows with the cube of that distance.
Earth: Twice the source mean radius; body diameter only, excluding rings.
Jupiter: Twice the source mean radius; body diameter only, excluding rings.
How we measure size →
This initial comparison is shown to scale. Enable JavaScript to change objects, explore the journey, and calculate a miniature model. You can still read every object guide below.
Make the comparison your own
The first object anchors the marble analogy. Swap the pair to change your point of view. The side-by-side scene always uses the same linear diameter scale for both objects.
“Copy this comparison” creates a link with your chosen objects and view. These combinations are interactive views; the curated guides below add more context to a few especially revealing pairs.