The dipole field, which resembles the field of a small but intense bar magnet, has a strength of 0.23 gauss in its equatorial plane at a distance of one Uranian equatorial radius from the centre. Cloud and haze layers are also indicated.Zonal wind speeds on Uranus.

Uranus - Uranus - The magnetic field and magnetosphere: Like the other giant planets, Uranus has a magnetic field that is generated by convection currents in an electrically conducting interior. Articles from Britannica Encyclopedias for elementary and high school students. L’atmosphère d’Uranus est recouverte d’un brouillard épais qui ne permet pas d’observer sa structure dans la lumière visible.


It is generally brighter near solstices and dimmer at equinoxes.Congratulations on this excellent venture… what a great idea!I use WIKI 2 every day and almost forgot how the original Wikipedia looks like. Voyager 2 est passée au plus près d'Uranus et de ses satellites le 24 janvier 1986 et reste encore à ce jour la seule et unique sonde spatiale à … We have created a browser extension.

(The terms Uranus’s rotation period of 17.24 hours was inferred when Voyager 2 detected Voyager 2 measured the horizontal variation of atmospheric temperature in two broad altitude ranges, at 60–200 millibars and 500–1,000 millibars. Cette brume est composée d’hydrocarbures comme l’acétylène produits par l’action de la lumière solaire (égale à la moitié de la lumière émise par la Lune sur la Terre) sur l’atmosphère de méthane.



Uranus facts teach us that this planet’s structure has three layers: the rocky core of silicate and iron-nickel; the mantle, which contains water, ammonia and methane; and the atmosphere which is mostly composed of hydrogen and helium. Get kids back-to-school ready with Expedition: Learn! Voyager 2 arriving at Uranus after a five-year journey from Saturn, Jan. 24, 1986. Shaded areas show the southern collar and its future northern counterpart.
Negative altitudes refer to locations below the nominal surface at 1 bar. You could also do it yourself at any point in time.It will enhance any encyclopedic page you visit with the magic of the WIKI 2 technology.

The Uranian atmosphere can be divided into five main layers: the The troposphere hosts four cloud layers: methane clouds at about 1.2 Little is known about the Uranian atmosphere as to date only one spacecraft, Although there is no well-defined solid surface within Uranus's interior, the outermost part of Uranus's gaseous envelope (the region accessible to remote sensing) is called its The observational history of the Uranian atmosphere is long and full of error and frustration. supérieures de brume dans la haute atmosphère d'Uranus. Informations générales; Épaisseur de -300 km à 4000 km [réf.



At depth it is significantly enriched in volatiles (dubbed "ices") such as water, ammonia and methane. The red curve is a symmetrical fit to the data.The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple.

The total power input into the aurora is 3–7 × 10 The hot thermosphere of Uranus produces hydrogen quadrupole emission lines in the The corona contains a significant population of supra-thermal (energy of up to 2 What we do.

Uranus owes its vibrant blue-green hues not from unusual oceans but from an upper atmosphere flush with methane, which absorbs the sun's red … Methane clouds were directly detected by The troposphere is very dynamic, exhibiting strong zonal winds, bright methane clouds,Hydrocarbons heavier than methane are present in a relatively narrow layer between 160 and 320 km in altitude, corresponding to the pressure range from 10 to 0.1 mbar and temperatures from 100 to 130 K.In addition to hydrocarbons, the stratosphere contains carbon monoxide, as well as traces of water vapor and carbon dioxide. Most of Uranus’ mass comes from water, ammonia and methane, followed by rocks in the core and the helium and hydrogen in the atmosphere. The same kind of zonal flow dominates the Uranus has no large spots like Jupiter’s long-lived The atmosphere of Uranus is composed primarily of hydrogen and helium. Uranus - Uranus - Basic astronomical data: At Uranus’s distance from the Sun, the planet takes slightly more than 84 Earth years, essentially an entire human life span, to complete one orbit. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica.Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Atmosphère d'Uranus Uranus, prise par la sonde Voyager 2.

Indeed, a recent analysis based on a new data set of the methane absorption coefficients shifted the clouds to 1.6 and 3 bar, respectively.


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