What planet always has cloud coverage?
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Several:\n\nVenus. \nJupiter.\nSaturn\nNeptune.\nUranus.\n\n\nAnd some moons have clouds:\n\nJupiter's Galilean moons Io, Europa, Ganymede and Callisto have dust clouds from micrometeorites. \n\nSaturn's moon titan has methane clouds apparently.
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i suppose a planet.cause it is denser then asteroids
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wikipedia.com\n\n\nA cloud is a visible mass of condensed droplets or ice crystals suspended in the atmosphere above the surface of the Earth or another planetary body. The branch of meteorology that studies clouds is nephology.\n\nOn Earth, the condensing substance is water vapor, which forms small droplets of water (typically 0.01 mm of ice crystals) that, when surrounded with billions of other droplets or crystals, are visible as clouds. Clouds reflect all visible wavelengths of light equally and are usually white, but they can appear grey or even black if they are so thick or dense that sunlight cannot pass through.\nContents\n[hide]\n\n    * 1 Cloud formation and properties\n          o 1.1 "Hot Ice" and "Ice Memory" in cloud formation\n    * 2 Cloud classification\n          o 2.1 High clouds (Family A)\n          o 2.2 Middle clouds (Family B)\n          o 2.3 Low clouds (Family C)\n          o 2.4 Vertical clouds (Family D)\n          o 2.5 Other clouds\n          o 2.6 Cloud fields\n    * 3 Colors of clouds\n    * 4 Global dimming\n    * 5 Global brightening\n    * 6 Clouds on other planets\n    * 7 See also\n    * 8 External links\n\n[edit]\n\nCloud formation and properties\nA variety of cloud formations.\nEnlarge\nA variety of cloud formations.\nGlobal scheme of cloud optical thickness.\nEnlarge\nGlobal scheme of cloud optical thickness.\n\nClouds form when the invisible water vapor in the air condenses into visible water droplets or ice crystals. This can happen in three ways.\n\n1. The air is cooled below its saturation point. This happens when the air comes in contact with a cold surface or a surface that is cooling by radiation, or the air is cooled by adiabatic expansion (rising). This can happen\n\n    * along warm and cold fronts (frontal lift),\n    * where air flows up the side of a mountain and cools as it rises higher into the atmosphere (orographic lift),\n    * by the convection caused by the warming of a surface by insolation (diurnal heating),\n    * when warm air blows over a colder surface such as a cool body of water.\n\n2. Clouds can be formed when two air masses below saturation point mix. Examples are breath on a cold day, aircraft contrails, and Arctic sea smoke.\n\n3. The air stays the same temperature but absorbs more water vapor into it until it reaches saturation.\n\nThe water in a typical cloud can have a mass of up to several million tonnes. However the volume of a cloud is correspondingly high, and the net density of the relatively warm air holding the droplets is low enough that air currents below and within the cloud are capable of keep it suspended. As well, conditions inside a cloud are not static: water droplets are constantly forming and re-evaporating. A typical cloud droplet has a radius on the order of 1 x 10-5 m and a terminal velocity of about 1-2 cm/s. This give these droplets plenty of time to re-evaporate as they fall into in the warmer air beneath the cloud.\nCumulonimbus cloud\nEnlarge\nCumulonimbus cloud\n\nMost water droplets are formed when water vapor condenses around a condensation nucleus, a tiny particle of smoke, dust, ash, or salt. In supersaturated conditions, water droplets may act as condensation nuclei.\n\nWater droplets large enough to fall to the ground are produced in two ways. The most important is through the Bergeron Process, theorized by Tor Bergeron, in which supercooled water droplets and ice crystals in a cloud interact to produce the rapid growth of ice crystals, which precipitate from the cloud and melt as they fall. This process typically takes place in clouds with tops cooler than -15°C. The second most important process is the collision and wake capture process, occurring in clouds with warmer tops, in which the collision of rising and falling water droplets produces larger and larger droplets, which are eventually heavy enough to overcome air currents in the cloud and the updraft beneath it and fall as rain. As a droplet f
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Mercury actually does have an atmosphere but the planet's small size makes it hard to retain.  It is not stable.
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The planets all condensed from the same dust cloud. This cloud was in orbit around the sun and was rotating. As a result of the rotation it was spun out into a disk - this is called an accretion disk and is seen around a lot of stars. So all of the planets condensed out of a disk and hence are in the same plane.\n\nSome objects orbiting the sun did not condense from this disk but were captured. These are typically not in the plane of the ecliptic. Pluto - recently removed from the canon of planets - is in this category.
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Cloud is in as usual way
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Venus, Uranus and Pluto\n\nI agree with the answer above about Uranus.
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Surprisingly, there is no total agreement about the size of our Solar System. Some say it's defined by the orbit of the outermost planet (used to be Pluto), while others say it's where the Sun's heliosphere ends. Then there's the definition that I personally favor -- the Oort Cloud of comets.\n\nHere's a breakdown of the three major sizes favored:\nPluto orbit - 5,900^6 km\nHeliosphere - 2.2^10 km \nOort Cloud  - 1.5^13 km (1.6 light years)
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Neptune and Uranus are made mostly of hydrogen, oxygen, nitrogen, and carbon, same as the comets... only in a way bigger clump that's still warm enough to keep them as gasses.\n\nSo the outer clouds are mostly hydrogen.  Then methane, then water vapor, then we can't see, but we think below that there's water, and probably some methane hydrate ices, and ice, and a bunch of carbon compounds, and at the very bottom, there's probably a "rocky core" of some solid material, which is probably mostly made of carbon compressed down very tightly, maybe into crystals.  Somebody did a research paper on it, and titled it "Lucy in the Sky with Diamonds," in the 60s.
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Saturn.  It's my favorite planet.  I guess because it is so different from the other planets.
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Because it's closest to Earth and doesn't have much of a cloud layer like Venus does.
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All types of clouds can be found throught the year in St. Paul, Minnesota. I can't name them all, but go to the weather channel. They have all kinds of information.
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Earth at Aphelion Search\nhttp://search.yahoo.com/search;_ylt=A0oGkk9cFFFFkDYAzqlXNyoA?p=earth+aphelion&prssweb=Search&ei=UTF-8&fr=yfp-t-501&x=wrt\n\nMoon near Apogee, Earth near Perihelion\nhttp://www.fourmilab.ch/images/peri_apo/\n\nEarth at Aphelion\nhttp://www.spaceweather.com/glossary/aphelion.html\n\nPictures\nhttp://images.search.yahoo.com/search/images?p=earth%20aphelion&prssweb=Search&ei=UTF-8&fr=yfp-t-501&x=wrt&fr2=tab-web
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Venus.  \n\nIt is the second nearest planet to the sun and due to its atmosphere full of carbon dioxide and sulfuric acid, it has the ability to trap heat.  So, basically, major global warming is taking place on Venus.\n\nAlthough Mercury is nearer to the sun, its atmosphere is weak and contains sodium, potassium and oxygen.  These, when exposed to the sun's rays, are lost/decomposed.  Therefore, there is not much atmosphere left to trap the heat, leaving it cooler than Venus.
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what is on the other side of the sun changes, as we and the other planets revolve around it, what "the other side" is, is a in a constant change...thats like asking what is on the other side of the world constantly as you are flying around it...  \n\nbeyond the Kuiper belt is what we call the Oort Cloud, where the Kuiper belt is in theory a significantly larger version of the asteroid belt, the Oort cloud is more spherical in nature completely encompassing the sun, solar system and Kuiper belt... beyond that deep space, other star systems, galaxies and the milky way...\n\n\nplease see the following diagrams...\n\nhttp://en.wikipedia.org/wiki/Image:Kuiper_oort.jpg\nhttp://en.wikipedia.org/wiki/Image:Oort_cloud_Sedna_orbit.jpg
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From the 1896 edition of the International Cloud Atlas which defined ten types of cloud. The ninth cloud was the cumulo-nimbus rising to a height of 10 km, which is the highest a cloud can be.
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Earth Radiation Balance and Impact of Clouds\n\n The Earth's climate system constantly adjusts so as to maintain a balance between the solar energy reaching Earth, and the energy escaping from Earth. For the Earth's system, the important components of the radiation budget are the planet surface, the atmosphere and clouds.\n\n Clouds can warm up the Earth and the atmosphere by absorbing terrestrial radiation (or longwave radiation) which escapes to space and emitting a portion of this absorbed energy both towards the surface and to space. Clouds can also have a negative effect on the Earth's climate, causing a cooling of the Earth. This results from the scattering back to space of shortwave rays from the Sun. This leads to a decrease of absorbed solar radiation by the surface of the Earth, since the cloud shield the Earth from incoming solar radiation, leading to a cooling of the Earth. \n\n Whether clouds cool or warm the Earth's climate depends on their temperature (or height in the atmosphere), thickness and particle constitution. For example, high and thin cirrus clouds tend to cause a net heating of the Earth since they are relatively transparent to incoming solar radiation, but highly absorbing to outgoing terrestrial radiation. This is due to their composition, of large ice particles, which scatter sunlight in the forward direction (i.e.: towards the surface of the Earth) and which are highly absorbing in the infrared (i.e.: to terrestrial radiation).\n\n Clouds are therefore one of the most important factor regulating the current climate system and future climate change. Measurements of cloud radiative forcing are needed to increase our understanding of the Earth's climate (Tian and Ramanathan, 2001). Monthly average results suggest that equatorial convective clouds have a neutral effect on the Earth radiation balance because the visible energy that they reflect to space is balanced by the infrared energy retained in the troposphere by absorption (Ramanathan et al, 1989, Cess et al, 2001, Ramanathan et al, 1989).