01
Mass isn't shown
Volume ratio is not the same as mass ratio — Saturn is less dense than water, so it has less mass than its volume alone would suggest.
Solar system · Question
How much bigger is Jupiter than Earth, really?
"Jupiter is huge" doesn't tell you much. Pick any two planets below and see the exact diameter and volume ratio between them.
Visual model
Pick two planets to compare.
vs
What's simplified
Two things this comparison leaves out.
02
Circles, not spheres
This is a 2D comparison of diameters. The volume number is calculated (diameter ratio cubed), not drawn to scale.
Misconception check
Quick check.
Quick check
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Distance scale ↗
Real distances vs compressed diagram.
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Solar system model
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Why diagrams aren't to scale
Size is only half the story — see why distance can't be shown accurately at the same time.