dwarf planet · Object guide
A small world, not a small idea.
Body diameters to scale. Positions and surface artwork are illustrative; Saturn’s rings are excluded.
A change of perspective
5.3614× 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.
Pluto: Twice the source mean radius; body diameter only, excluding rings.
Earth: Twice the source mean radius; body diameter only, excluding rings.
How we measure size →2,376.6 km
Twice the source mean radius; body diameter only, excluding rings.Pluto and the Moon offer an approachable comparison: both remain easy to see on the same screen. Try predicting which disk will be wider before checking the labels.
Compare Pluto with Earth, then move directly to Jupiter. You do not need to follow a fixed sequence. The object selectors let your own questions determine the next step.
Planetary Physical Parameters — NASA JPL. Twice the source mean radius; body diameter only, excluding rings.