SIZE IN SPACE

Explore the scale of the cosmos

Two objects. One scale.

Choose any pair. Compare their diameters, line them up, or build a miniature version.

One scale. Two worlds.True diameter scale
Earth and Jupiter to scaleTheir 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.

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.

Choose a size to bring this comparison down to Earth.

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 →

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.

Follow your curiosity

A few places to begin

All objects ↗