why is pluto very cold?
952732
It's far from the sun and it's a "dead" world - there are no internal processes that generate heat.  So nothing to warm it up means it's freezing cold.
642503
Its a planet!!  On a serious note try this link\n\nhttp://en.wikipedia.org/wiki/Pluto\n\n:) Hope this helps........
469251
Of the nine bodies currently recognized as planets, \nPluto is the farthest from the Sun (and thus\npresumably the coldest).  We don't know the exact\nsurface temperatures, but some estimates are:\n\n1) -228 to -238 C   (see reference #1)\n2) -205C (see reference #2)\n3) -233° to -223° C (see reference #3)
811501
Pluto is not a planet anymore... it is now a "dwarf planet."\n\nWhen it is outside Neptune's Orbit, it is 8 planets away from the Sun and when it is inside Neptune's Orbit, it is 7 planets away from the Sun.  \n\nPluto has a very eccentric orbit and spends 20 year chunks of time closer to the Sun than Neptune.\n\nAloha
209097
Pluto is the fartherest planet, there is some discussion about it being a planet or not but for this answer we'll let it be one, from the sun during most of it's orbit. It's 5,913,520,000Km from the Sun.\nThe Main asteriod belt lies between Mars and Jupiter, roughly 374,172,480Km from the sun, the planets run Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune & Pluto.\nThe Kuiper Belt, made up of comets instead of asteriods, lies outside of the orbit of Pluto and some think Pluto is just a comet from this belt. Then going way on out past the Kuiper Belt you run into the Oort Cloud roughly 22,450,348,800,000Km from the Sun and made up of trillions of cometary bodies.
205258
Your question is very vague and almost meaningless without more details added.\n\nWhere are all these objects in relation to Pluto?  What is there distance away?  Are they sitting on the surface, or are they here on Earth?  When someone says "all objects", do they really mean ALL objects?  Obviously, I am sitting here on Earth and Pluto is exerting a very weak attractive force on me, but I am not accelerating towards it since my over all net force is directed much greater toward to Earth and toward the sun.\n\nForce = mass * acceleration\ngravitational Force = (G * m1 * m2) / r^2
34826
Pluto's orbit is an elipse, therefore its distance from the earth is actually changing.  However, at its closest point along its orbit it is 2.67 billion miles from earth and at its farthest point it is well over 3 billion miles from earth. Hope this helps
1111925
The first spacecraft to visit the planet Pluto lifted off from Earth in January of 2006 and is expected to reach Pluto on July 14, 2015.  Pluto is so far from Earth that not even the Hubble Space telescope is able to take clear pictures of it.  Pluto's distance from the sun varies between 30 AU and 49 AU.  One AU is the distance between the Earth and the sun.  Pluto is so distant that man will very likely not visit for many 100's of years yet to come as we do not possess the technology to make the voyage to Pluto within an acceptable period of time.  Compare this to the distance between Earth and Mars which is only 0.37 AU (35 million miles).
399520
In order to get out to Pluto in the time frame it is going to do it in (10 years?), the New Horizons probe needs to be traveling very fast....Pluto is a LONG way out there.\nPluto is also a pretty small planet, and thus doesnt have tha strong of a gravitational pull.\n\nSo you have the combination of a very fast moving probe going by a small planet.  I would be pretty hard to get tha thing into an orbit....it would take alot of energy to due to (slow it down, put it into an orbit trajectory).\nThat energy needs to be supplies somehow, by means of some fuel.  That fuel has mass which you need to carry all the way out to Pluto to use, all that extra mass costs more fuel in order to lauch and accelerate out to Pluto.\n\nIt is probably a money problem, it would probably be too expensive and complicated I am guessing, but it could be done.\nAlso, NASA really likes sending thins outside of our solar system as we dont really know much about what it is out there on the edge.  If your going to go all the way to Pluto, why not go farther?
905784
what is the coldest planet
389936
Nope.  That's my professional (astronomer) opinon.  Here is why:\n\nPluto is a member of a large collection of similar sized objects that orbit the sun in the same region as it.  This is the same situation that Ceres, the largest asteroid is in.  Pluto was simply the first of these icy bodies to be found, we have since found almost 1000 other objects that share orbital space with Pluto.  Many of them are almost the same sice as it, and one (2003 UB313) is in fact larger than Pluto.\n\nNo good defination of planet exists that allows for pluto to be a planet without admitting about 10-100 other objects in as planets as well, unless you simple state that Pluto is a planet in an ad hoc manner.\n\nThe definition that I generally use in my work is that a planet is an object that has cleared it's orbital space of all other small bodies.  All of the main 8 planets satisfy the criteria.  Pluto, 2003 UB313, Ceres and other small bodies do not.
792162
The day side of the moon reaches over 200 degress fahrenheit.  Not very cold is it?  Also, when you get out near Jupiter, Saturn and Neptune you have to realize that these planets put out more heat than they get from the sun, so their local environment is warmer than many expects.\n\nAlso, the Corona (the outer layer of the sun - where the electrons are located out AWAY from the sun is over 4 million degrees!).  So that's alot of heat and we only get less than like 1/10th of 1% or so on Earth.  So we get next to nothing of what the sun actually puts out, thank god.
16996
Pluto was discovered by the astronomer Clyde Tombaugh at the Lowell Observatory in Arizona on February 18, 1930. \n\nIn the matter of Pluto the discretion of naming the new object belonged to Lowell Observatory and its director, Vesto Melvin Slipher, who, in the words of Tombaugh, was "urged to suggest a name for the new planet before someone else did". \n\nThe name retained for the planet is that of the Roman god Pluto, and it is also intended to evoke the initials of the astronomer Percival Lowell, who predicted that a planet would be found beyond Neptune. The name was first suggested by Venetia Burney, at the time an eleven-year-old girl from Oxford, England. Over the breakfast table, one morning her grandfather, who worked at Oxford University's Bodleian Library, was reading about the discovery of the new planet in the Times newspaper. He asked his granddaughter what she thought would be good name for it. Venetia thought that as it was so cold and so distant it should be named after the Roman God of the underworld. Professor Herbert Hall Turner cabled his colleagues in America with this suggestion, and after favourable consideration which was almost unanimous, the name Pluto was officially adopted and an announcement made by Slipher on May 1, 1930.
927189
To answer your second question first (I'm just an ornery cuss), Pluto is still a member of the Solar System. It's no longer considered a planet, though. It is now called a dwarf planet because of its size and extremely anomalous orbit (so look it up already).Just like the moon. asteroids, etc. it is still part of the Solar System.\n\nAs to the 1st part of your question-------Usually, as long as Mickey gives him table scraps instead of that crap from the can.Woof!Woof!
767889
The International Astronomical Union decided that Pluto was no longer a planet.  Instead, they decided to classify it as a "dwarf planet".\n\nSee the details below.\n\nRESOLUTION 5A\nThe IAU therefore resolves that "planets" and other bodies in our Solar System, except satellites, be defined into three distinct categories in the following way:\n\n(1) A "planet" [footnote 1] is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit.\n\n(2) A "dwarf planet" is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape [footnote 2] , (c) has not cleared the neighbourhood around its orbit, and (d) is not a satellite.\n\n(3) All other objects [footnote 3] except satellites orbiting the Sun shall be referred to collectively as "Small Solar-System Bodies".\n\n\nFootnote 1: The eight "planets" are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.\n\nFootnote 2: An IAU process will be established to assign borderline objects into either dwarf planet and other categories.\n\nFootnote 3: These currently include most of the Solar System asteroids, most Trans-Neptunian Objects (TNOs), comets, and other small bodies.\n\nRESOLUTION 6A\nThe IAU further resolves:\n\nPluto is a "dwarf planet" by the above definition and is recognized as the prototype of a new category of trans-Neptunian objects.
375626
This directory should give you the north polar CC for all the planets out to Pluto; the southern ones should be easy to extrapolate from these figures.\n\nhttp://nssdc.gsfc.nasa.gov/planetary/planetfact.html
822336
read http://en.wikipedia.org/wiki/Pluto\n\ni don't know what you mean by "special", but pluto does orbit the sun, is ball-shaped, does not have an isolated orbit (a bunch of other similar bodies have similar orbits.), and is not a satellite so it is not a planet.\n\ni have been waiting for this since i was about ten.  i knew that pluto didn't fit the pattern set by the major bodies in the solar system so it was an anomaly.  it just felt "out of place".  now that astronomers have found hundreds of other bodies with similar orbits, classifying "134340 pluto" as a planet is even more irrational.  i feel somewhat satisfied, but i don't know how long this will drag on tho.  this was the right thing to do, believe me.  this does not change anything about pluto or the solar system.  this just corrects the mistake of classifying pluto as a planet initially.\n\nmany astronomers consider pluto and charon to be a binary system, but two small bodies orbit that system.  they are called nix and hydra.\n\nincidentally, "134340 pluto" was never a moon of neptune.  neptune did capture triton. this is why triton has a retrograde orbit.