Scale Comparison

Earth vs Jupiter, to scale

Jupiter dominates the planetary tier of the Solar System so thoroughly that Earth starts looking like a compact inner-world benchmark rather than a central standard.

Shared physical scale
78,000km
Earth12,742 km
Jupiter140,000 km

Scale insight

Jupiter's diameter is about 11.2 times Earth's.

This is the scale break that makes the Solar System feel structurally uneven. The inner planets cluster in one size regime, then Jupiter arrives as a world built from a different inventory of materials under different conditions.

That jump is why Jupiter matters beyond simple bigness. It is not just the largest planet. It is the clearest boundary marker between the compact terrestrial worlds and the giant-planet regime.

Objects

Open each object in context

Planets

Earth

12,742 kmdiameter

Earth is the rocky planet on which we live and the most familiar anchor for planetary scale. It remains the only world known to host life, with long-lived surface oceans that have shaped both its geology and its atmosphere.

Object class
Terrestrial planet
Composition
Silicate rock and iron core
Temperature
~288 K mean surface
Estimated age
~4.54 billion years
Host
Sun
Visual creditNASA / Apollo 17 crew / Public domainSource: Wikimedia Commons
Planets

Jupiter

140,000 kmdiameter

Jupiter is the largest planet in the Solar System. It is more massive than all the other planets combined and still spins once in only about 10 hours, giving the giant world the shortest day in the planetary family.

Object class
Gas giant planet
Mass
~318 Earth masses
Host
Sun
Estimated age
~4.5 billion years
Composition
Hydrogen and helium
Temperature
~110 K cloud tops
Visual creditNASA / JPL-Caltech / SwRI / MSSS / Kevin M. Gill / Public domainSource: Wikimedia Commons

Between the smallest and the largest, perspective is everything.

About

Scale of Space is a scroll-based journey through the universe, placing objects on a single logarithmic scale so you can compare size across an unbroken range.

Guides turn parts of that scale into curated essays, while focused views let you explore the same range through specific groups of objects.

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Solar System PlanetsFrom Electron to AtomsStars To ScaleBirth And Death Of StarsBlack Holes To Scale

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