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Uranus vs. Sun - Comparison of sizes
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Uranus vs Sun - Comparison

Uranus
Sun
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Uranus

Uranus

Diameter (km)50724
Distance to sun (km)2873550000
Equator (km)159354
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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Sun

Sun

Diameter (km)1392684
Equator (km)4370005
Temperature5778000

<p>The Sun is the star at the center of the Solar System. </p>It is a sphere of plasma, with inner convective movement that generates a magnetic field by means of a dynamo process. It is by far the main source of energy for life on Earth. Its diameter is about 1.39 million kilometers (864,000 miles), or 109 times that of Earth, and its mass is about 330,000 times that of Earth. It accounts for about 99.86% of the total mass of the Solar System. Roughly three quarters of the Sun's mass is composed of hydrogen (~73%); the remainder is mostly helium (~25%), with much smaller amounts of heavier elements, including oxygen, carbon, neon, and iron.The Sun is a G-type main-sequence celebrity (G2V) based on its spectral class. As such, it's informally rather than completely accurately referred to as a yellow dwarf (its light is closer to white than yellow). It formed approximately 4.6 billion years ago from the gravitational collapse of matter within a region of a large molecular cloud. Whereas the remainder flattened into an orbiting disk that became the Solar System, most of this matter gathered in the center. The central mass became dense and so hot that it initiated nuclear fusion. It is believed that almost all stars form by this process.



The Sun fuses about 600 million tons of hydrogen into helium every second, converting 4 million tons of matter into energy every second. This energy, which may take 170,000 and between 10,000 years to escape from its core, is the origin of the Sun's light and heat. When hydrogen fusion in its core has diminished to the point where the Sun is no more in hydrostatic equilibrium, its core will undergo a marked increase in density and temperature while its outer layers expand, eventually transforming the Sun into a red giant. It is calculated that the Sun will become sufficiently large to engulf the orbits of Venus and Mercury, and render Earth uninhabitable -- but not for about five billion years. After this, it will shed its outer layers and become a dense type of cooling star called a white dwarf, and no longer produce energy by fusion, but still glow and give off heat from its previous fusion. The Sun on Earth's effect has been recognized since ancient times, and some cultures as a deity have seen the Sun. Its orbit around the Sun and the synodic rotation of Earth will be the basis of solar calendars, among which is the calendar in use today.

Source: Wikipedia

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