Scale Comparison

Jupiter vs Uranus, to scale

Both planets belong to the giant branch of the Solar System, but a strict diameter comparison keeps their internal hierarchy honest. Jupiter remains the larger benchmark by enough margin to show that not all giant planets occupy the same scale tier.

Shared physical scale
78,000km
Uranus50,724 km
Jupiter140,000 km

Scale insight

Jupiter's diameter is about 2.8 times Uranus's.

This is a useful comparison because it separates the biggest gas giant from the smaller ice-giant class without leaving the giant-planet regime entirely. Uranus is large in its own right, but Jupiter still expands the frame dramatically.

That difference helps show that giant planets are not a single homogeneous category. They already divide into distinct size and structure regimes before you leave the Solar System.

Objects

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Planets

Uranus

50,724 kmdiameter

Uranus is an ice giant that rotates tipped over on its side, with its spin axis tilted by about 98 degrees. That extreme tilt makes its seasons unlike any other planet’s, leaving each pole pointed toward the Sun for decades at a time during its 84-year orbit.

Object class
Ice giant planet
Mass
~14.5 Earth masses
Host
Sun
Estimated age
~4.5 billion years
Composition
Hydrogen, helium, water-ammonia-methane ices
Temperature
~76 K cloud tops
Visual creditNASA / JPL-Caltech / 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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