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Earth vs. Uranus - Comparison of sizes
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Earth vs Uranus - Comparison

Earth
Uranus
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Earth

Earth

Diameter (km)12.756,32
Distance to sun (km)149,600,000
Equator (km)40,075
Temperature-89/58

Earth is the third planet from the Sun and the only astronomical object known to harbor life. According to radiometric dating and other evidence, Earth formed over 4.5 billion years ago. Earth's gravity interacts with other objects in space, especially the Sun and the Moon, which is Earth's only natural satellite. Earth orbits around the Sun in 365.256 solar days, a period known as an Earth sidereal year. During this time, Earth rotates about its axis 366.256 times, that is, a sidereal year has 366.256 sidereal days.Earth's axis of rotation is tilted with respect to its orbital plane, producing seasons on Earth. The gravitational interaction between Earth and the Moon causes tides, stabilizes Earth's orientation on its axis, and gradually slows its rotation. Earth is the densest planet in the Solar System and the largest and most massive of the four rocky planets. Earth's outer layer (lithosphere) is divided into several rigid tectonic plates that migrate across the surface over many millions of years. About 29% of Earth's surface is land consisting of continents and islands. The remaining 71% is covered with water, mostly by oceans but also lakes, rivers and other fresh water, which all together constitute the hydrosphere.



The majority of Earth's polar regions are covered in ice, including the Antarctic ice sheet and the sea ice of the Arctic ice pack. Earth's interior remains active with a solid iron inner core, a liquid outer core that generates Earth's magnetic field, and a convecting mantle that drives plate tectonics. Within the first billion years of Earth's history, life appeared in the oceans and began to affect Earth's atmosphere and surface, leading to the proliferation of anaerobic and, later, aerobic organisms. Some geological evidence indicates that life may have arisen as early as 4.1 billion years ago. Since then, the combination of Earth's distance from the Sun, physical properties and geological history have allowed life to evolve and thrive. In the history of life on Earth, biodiversity has gone through long periods of expansion, occasionally punctuated by mass extinctions. Over 99% of all species that ever lived on Earth are extinct. Estimates of the number of species on Earth today vary widely; most species have not been described. Over 7.7 billion humans live on Earth and depend on its biosphere and natural resources for their survival. Politically, the world has around 200 sovereign states.

Source: Wikipedia
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Uranus

Uranus

Diameter (km)50,724
Distance to sun (km)2,873,550,000
Equator (km)159,354
Temperature123-23

Uranus is the seventh planet from sunlight. It has planetary mass that is fourth-largest and the planetary radius in the Solar System. Uranus is similar in composition and both have bulk chemical compositions which differ from that of the larger gas giants Jupiter and Saturn. For this reason, scientists frequently classify Uranus and Neptune as"ice giants" to distinguish them from the gas giants. Uranus' atmosphere is very similar to Jupiter's and Saturn's in its primary composition of hydrogen and helium, but it contains more"ices" such as water, ammonia, and methane, along with traces of other hydrocarbons. It has the coldest planetary atmosphere in the Solar System, with a minimum temperature of 49 K (−224 °C; −371 °F), and has a complex, layered cloud structure with water thought to make up the lowest clouds and methane that the uppermost layer of clouds.



The interior of Uranus is mainly composed of ices and rock.Like another giant planets, Uranus has a ring system, a magnetosphere, and numerous moons. The Uranian system has a configuration since its axis of rotation is tilted almost to the plane of its solar orbit. Where other planets have their equators its north west and south poles lie. In 1986, Uranus was shown by pictures from Voyager 2 without storms or the cloud bands related to the giant planets, as an almost featureless world in visible light. Voyager 2 remains the only spacecraft to see the planet. Observations from Earth have shown seasonal change and weather activity that was enhanced as Uranus approached its equinox. Wind speeds can reach 250 metres per second (900 km/h; 560 mph).

Source: Wikipedia

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