Earth is the largest of the four rocky planets and the only world known to host life. Liquid water has covered most of its surface for billions of years, shaping both its geology and its atmosphere.
Scale Comparison
Uranus is about four Earth diameters wide, slightly larger than Neptune and far larger than any rocky planet.
Uranus contains far more water-, ammonia- and methane-rich material than Jupiter or Saturn, beneath a hydrogen-helium atmosphere. “Ice giant” describes that composition, not a frozen surface.
Objects
Object details and sources
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.
Continue reading
Continue with another comparison or open the full scale.
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 explain selected parts of that range, while focused views filter the objects by subject.