Uranus vs Earth: Comparison, Size, Mass, Gravity, Similarities and Differences

Uranus vs Earth: Comparison, Size, Mass, Gravity, Similarities and Differences

Uranus vs Earth

The cosmos is a realm of diverse planets, each offering a unique glimpse into the wonders of our universe. In this exploration, we uncover the captivating distinctions between two intriguing planets: Uranus and Earth. These celestial neighbors, although vastly different, share a common place in our cosmic tapestry.

Uranus Compared to Earth

Uranus and Earth are two distinct planets within our solar system, each with its unique characteristics and features. Here, we'll explore the comparison, similarities, and differences between Uranus and Earth.

Uranus and Earth Similarities

  1. Composition:
    • Both Uranus and Earth are composed mostly of hydrogen and helium. However, while Earth is predominantly rocky with a metallic core, Uranus is classified as an ice giant, consisting of a mixture of water, ammonia, and methane ices in addition to gases.
  2. Magnetic Fields:
    • Both planets have magnetic fields, but Uranus' magnetic field is peculiar. It is tilted at an extreme angle, about 59 degrees from its rotation axis, whereas Earth's magnetic field is roughly aligned with its rotation axis.
  3. Rotation Direction:
    • Both Uranus and Earth rotate counterclockwise on their axes. However, Uranus has a unique rotational feature—it rotates almost on its side, with an axial tilt of about 98 degrees. This extreme tilt is responsible for its unique seasons.
  4. Natural Satellites:
    • Both planets have moons (natural satellites). Earth has one large moon, while Uranus has 27 known moons. Some of Uranus' moons, such as Titania and Oberon, are relatively large.

Uranus and Earth Differences

  1. Atmosphere:
    • Earth's atmosphere is primarily composed of nitrogen and oxygen, supporting life as we know it. Uranus has a predominantly hydrogen and helium atmosphere with traces of methane. Its atmosphere gives Uranus a bluish-green color.
  2. Surface Conditions:
    • Earth has a solid surface, including continents and oceans. Uranus, being a gas giant, lacks a solid surface. Its outer layers consist of a thick atmosphere, and as we move toward the core, the pressure and temperature increase significantly.
  3. Temperature:
    • Earth has a diverse climate with temperatures suitable for liquid water, essential for life. Uranus, being much farther from the Sun, is colder, with an average temperature of about -224 degrees Celsius (-371 degrees Fahrenheit).
  4. Ring Systems:
    • While Earth does not have a ring system, Uranus is known for its set of rings. These rings are fainter and less prominent than Saturn's, consisting of dark particles and debris.

Uranus and Earth Size Comparison

Uranus and Earth differ significantly in size:

  • Uranus:
    • Diameter: Approximately 50,724 kilometers (31,518 miles)
    • Volume: About 68 times that of Earth
    • Radius: Around 25,362 kilometers (15,759 miles)
  • Earth:
    • Diameter: Approximately 12,742 kilometers (7,918 miles)
    • Volume: Smaller compared to Uranus
    • Radius: Around 6,371 kilometers (3,959 miles)

Uranus and Earth Mass Comparison

  • Uranus:
    • Mass: Approximately 14.5 times that of Earth
  • Earth:
    • Mass: Smaller compared to Uranus

Uranus and Earth Gravity Comparison

  • Uranus:
    • Gravity: Approximately 8.69 m/s² (equatorial)
  • Earth:
    • Gravity: Approximately 9.81 m/s²

Uranus and Earth Side by Side

If we were to place Uranus and Earth side by side, Uranus would appear much larger due to its greater diameter and volume. Earth's solid surface and diverse ecosystems would contrast sharply with Uranus' gaseous and featureless exterior. The extreme axial tilt of Uranus would be noticeable, causing its poles to receive varying amounts of sunlight throughout its orbital period.

Uranus and Earth

Here's a concise summary of the main differences between Uranus and Earth:


  • An ice giant with a sideways rotation.
  • Lacks a solid surface and consists of icy and gaseous layers.
  • Has a predominantly hydrogen and helium atmosphere with traces of methane.
  • Appears blue-green due to the presence of methane.
  • Much larger in diameter than Earth.
  • Extremely cold temperatures due to its distance from the Sun.


  • A terrestrial planet with a solid surface.
  • Features diverse continents, oceans, and various ecosystems.
  • Has a nitrogen and oxygen-rich atmosphere that supports life.
  • Has a breathable atmosphere and a wide range of climates.
  • Smaller in diameter compared to Uranus.
  • Supports a wide range of life forms and ecosystems.

Earth vs Uranus

Here's a detailed specification table comparing Uranus and Earth:

Specification Uranus Earth
Classification Ice Giant Terrestrial Planet
Diameter 51,118 km 12,742 km
Mass 8.68 x 10^25 kg 5.972 x 10^24 kg
Composition Hydrogen (83%), helium (15%), methane (2%) Nitrogen (78%), oxygen (21%)
Atmosphere Hydrogen, helium, methane Nitrogen, oxygen, trace gases
Atmospheric Color Blue-green due to methane Blue due to Rayleigh scattering
Surface Lacks a solid surface; icy and gaseous Solid surface with land and water
Orbital Distance from Sun Approximately 2.87 billion km (19.22 AU) Approximately 149.6 million km
Orbital Period About 84 years About 365.25 days
Average Surface Temperature Approximately -224°C (-371°F) Approximately 15°C (59°F)
Liquid Water Lacks liquid water on the surface Abundant in oceans, lakes, rivers
Moons 27 moons, including Titania and Oberon 1 moon (The Moon)


Uranus vs Earth Size

Uranus and Earth exhibit significant differences in terms of size. Uranus stands as a giant among planets, boasting a diameter of about 51,118 kilometers, making it approximately four times larger than Earth. This immense size classifies Uranus as an ice giant, distinct from the terrestrial planets. Earth, on the other hand, has a diameter of 12,742 kilometers, making it a relatively smaller terrestrial planet. The contrasting sizes of these two worlds contribute to their distinct physical characteristics and overall appearances.

Uranus vs Earth Temperature

Temperature variances between Uranus and Earth stem from their unique positions within the solar system and their atmospheres. Uranus experiences extremely cold temperatures due to its substantial distance from the Sun. Average surface temperatures on Uranus plummet to around -224°C (-371°F), rendering it one of the coldest planets in our solar system. In contrast, Earth's proximity to the Sun and its moderate atmosphere lead to more hospitable conditions. Earth's average surface temperature is approximately 15°C (59°F), allowing for the presence of liquid water and a diversity of climates conducive to life.

Uranus vs Earth Mass

The contrast in mass between Uranus and Earth is another defining characteristic. Uranus possesses a mass of approximately 8.68 x 10^25 kilograms, making it roughly 14.5 times the mass of Earth. This difference in mass contributes to Uranus' larger size and gravitational influence. Earth, with a mass of about 5.972 x 10^24 kilograms, maintains a balance between its gravitational pull, atmosphere, and geological features, fostering a stable environment that sustains life.

Uranus vs Earth Atmosphere

The atmospheres of Uranus and Earth are distinctive and play a vital role in shaping their respective planetary conditions. Uranus' atmosphere primarily consists of hydrogen (83%) and helium (15%), with a trace amount of methane (2%). The presence of methane gives Uranus its unique blue-green coloration. Earth's atmosphere, in contrast, is primarily composed of nitrogen (78%) and oxygen (21%), creating a breathable environment that supports life. The varied atmospheric compositions contribute to the distinct physical and chemical processes on both planets.

Uranus: The Enigmatic Ice Giant

Uranus stands out as an ice giant, distinct from the familiar terrestrial and gas giants in our solar system. Its most remarkable feature is its sideways rotation, often described as "rolling" on its axis. This unique orientation gives Uranus its characteristic appearance of rotating from top to bottom rather than side to side. The planet is enveloped by a thick atmosphere primarily composed of hydrogen, helium, and traces of methane. The presence of methane imparts Uranus its blue-green hue, making it one of the few planets in our system with such vibrant coloration. Unlike Earth, Uranus lacks a solid surface, featuring an icy and gaseous composition that extends into its deep interior.

Earth: Our Blue Oasis

Earth, often referred to as the "Blue Planet," is home to a rich tapestry of life and geological wonders. Its solid surface is adorned with continents, oceans, mountains, and valleys, fostering a wide range of ecosystems and biodiversity. The planet's atmosphere is a delicate balance of nitrogen (78%) and oxygen (21%), with trace amounts of other gases. This atmospheric composition sustains life and regulates temperatures, allowing liquid water to exist on the surface. Earth's diverse climates, from icy poles to tropical rainforests, are a testament to its intricate and interconnected systems.

Size and Distance

Uranus is significantly larger than Earth in terms of diameter, measuring about 51,118 kilometers compared to Earth's 12,742 kilometers. However, Earth's mass is substantially greater due to its denser composition. Uranus orbits much farther from the Sun, with an average distance of approximately 2.87 billion kilometers, whereas Earth orbits at an average distance of about 149.6 million kilometers.

Atmospheres and Conditions

Uranus' atmosphere is primarily composed of hydrogen (83%) and helium (15%), with a small percentage of methane. The presence of methane is responsible for the planet's unique coloration. In contrast, Earth's atmosphere is dominated by nitrogen (78%) and oxygen (21%), creating a breathable environment conducive to life. Uranus experiences extreme cold temperatures due to its distance from the Sun, with average temperatures plummeting to around -224°C (-371°F). On Earth, a temperate climate supports the existence of liquid water, ranging from freezing polar regions to warmer equatorial zones.


The comparison between Uranus and Earth underscores the incredible diversity of planets within our solar system. Uranus, with its enigmatic ice giant status and sideways rotation, offers insights into the variety of planetary formations. Earth, our cherished home, boasts a rich biosphere, diverse climates, and the intricate balance that enables life to thrive. These two planets, though distinct, serve as a reminder of the captivating mysteries that continue to unfold in our cosmic neighborhood.

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