What is the size of the planets in terms of Pluto's diameter?
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Its all relative..usually we use sun as a point of a reference when we talk about relative size of planets which circle it. Pluto is about the same size as mercury.
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Jupiter has a diameter equal to 11.2 times the diameter of Earth.  In terms of volume, the ratio is 11.2^3 = 1405.
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Tiny Pluto is the last planet in our family. The dark, cold planet's average distance from the Sun is a little over 3.5 billion (3,500,000,000) miles. If you tried to step off this distance, you would be over two miles away from your Sun when you reached the location of Pluto. If you got on a jet and flew at 600 miles per hour from the Sun to Pluto, it would take 675 years. If you could drive the same distance, it would take over 5,700 years.
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No.\n\nIts likely even that Pluto will be relegated to being a Kuiper belt object rather than a plnet, leaving just 8.\n\nKuiper belt objects are regularly discovered.
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http://en.wikipedia.org/wiki/Eris_%28dwarf_planet%29\nhttp://en.wikipedia.org/wiki/Pluto\n\nyou must be asking about "136199 eris", but it is not a planet.  it is about five percent bigger than "134340 pluto", but neither are planets.  the solar system has eight planets.  they are mercury, venus, earth, mars, jupiter, saturn, uranus, and neptune.\n\n"136199 eris" and "134340 pluto" do orbit the sun, are ball-shaped, do not have an isolated orbit (a bunch of other similar bodies have similar orbits.), and are not a satellites so they are not a planets.\n\non 24 august 2006, the international astronomical union decided that pluto should not be categorized as a planet.  i have been waiting for this since i was about ten when i learned 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. many planetary astronomers are satisfied that the definition is rigorous enuf. i can accept that the definition is flawed, but i can not accept that "134340 pluto" is a planet.\n\nthis 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.
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All of the above are incorrect in terms of the semantics of what "officially" makes a planet a planet. You need to look at the IAU (International Astronomical Union) definition of planet to see why Pluto is now defined as a dwarf planet\n\nFirst, why does Pluto not fit the IAU planet defintion?\n\n(1) A "planet"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\nPluto fails in "c".  Personally, I think "neighborhood" should be definined in terms of an orbital dynamics phase space since it never comes close to Neptune due to the 3:2 resonance  of their  orbits: my opinion and $3.95 will get you decaf latte at Starbucks. (Hmm... Neptune has not cleared Pluto out of ITS orbit either. . . maybe they know about some other icy bodies in Pluto's orbit?)\n\nPluto DOES meet the qualifications  for a dwarf planet.\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) shape2, (c) has not cleared the neighbourhood around its orbit, and (d) is not a satellite.
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Wow, just asked my 10year old same question.  He said it is a planet they have recently discovered about twice the distance of Pluto.
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Pluto facts:\n\nDiscovered at Lowell Observatory in Flagstaff, Arizona where Northern Arizona University is located.  This observatory was initially used to look for canals on Mars.\n\nIt is debated as a planet, because it does not fit the density patterns observed from other planets in the solar system.\n\nIt has an atmosphere, which is odd given its size.\n\nIts moon, Charon, is actually located within its atmosphere, which almost makes it a double planet.\n\nIt is approximately 40 AU from the sun, which is 40 times the distance between the sun and the earth.\n\nPluto may not be the last planet in the solar system, as there is evidence of a planet, known as Xena.\n\nAfter the discovery of Neptune, some people were still concerned over a variation in gravitational forces, and the search began.\n\nPhotos of Pluto were taken in 1915 and were not discovered for almost 15 years.\n\nPluto has the highest eccentric orbit of the known planets, that is it is much more elliptical rather than circular.\n\nIs this enough?
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Designated 2003 UB313 (it hasn’t been officially named yet), this “planet” is slightly larger than Pluto, has a small moon and takes more than 500 Earth years to orbit the Sun.\nA planet is a body large enough that, when it formed, it condensed under its own gravity to be shaped like a sphere. It orbits a star directly and is not a moon of another planet.\n To simplify things, some scientists propose that the size of Pluto be designated the smallest size for a planet. If that argument carries the day, we now have 10 planets, since 2003 UB313 meets all the criteria.
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Europa\n\nIo: Diameter: 3643 kilometres. Mass: 8.93×10^22 kilograms \nEuropa: Diameter: 3122 kilometres. Mass: 4.8×10^22 kilograms \nGanymede: Diameter: 5262 kilometres. Mass: 1.48×10^23 kilograms \nCallisto: Diameter: 4821 kilometres. Mass: 1.08×10^23 kilograms
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First ... assume an average diameter (or radius) for the planet.\n\nThe average radius normally given is 3963.1 miles (6378 km).\n\nCircumference of a circle = 2 * pi * r = pi * d\n\nCircumference = (2) * (3.14159) * (3963.1) = 24900.9 miles\n... which is approximately 40074 km.
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The distance between Earth and Pluto varies as the two planets move around their orbits. When they are closest, they are about 29 A.U. apart; at most, the distance is about 51 A.U. Since light travels about 300,000 kilometers each second, it would take light anywhere between 8 hours and 14 hours to make the round-trip journey to Pluto from Earth.\n\nRadio signals travel at the same speed as light. If you were using radio signals to control a robot on Pluto, you would have to be very patient. If you sent your robot a command to move, the command would arrive at least 4 hours later. Then, if your robot took a picture and sent it back to Earth, it would take at least 4 more hours before you could see that picture! \n\n\n\nAU\n\nAU, which stands for "astronomical unit", is a unit for measuring distance. One AU is the average distance from the Sun's center to the Earth's center. It is equal to 149,597,871 km (92,955,807 miles).\n\nAUs are often more convenient to use than kilometers when measuring large distances such as those in space. In this case kilometers are just too small - it would be like measuring the distance from Boston to San Francisco in inches. AUs simply make a measurement easier to understand and give you something to compare it to.\n\nFor example, Saturn's orbit around the Sun has an average radius of 9.5 AU, which means that Saturn is about ten times farther from the Sun than Earth is. The average distance from the Sun to distant Pluto is about 40 AU. Mercury, the planet closest to the Sun, orbits at an average distance of 0.39 AU.\n\nAUs are generally used for measurements of distances within our Solar System. Distances to stars are much larger, and are expressed in terms of light years. One light year is equal to more than 63,000 AUs. The nearest star, Proxima Centauri, is just over 4 light years away.\n\nAlthough Pluto was discovered in 1930, limited information on the distant planet delayed a realistic understanding of its characteristics. Today Pluto remains the only planet that has not been visited by a spacecraft, yet an increasing amount of information is unfolding about this peculiar planet. The uniqueness of Pluto's orbit, rotational relationship with its satellite, spin axis, and light variations all give the planet a certain appeal.\n\nPluto is usually farther from the Sun than any of the nine planets; however, due to the eccentricity of its orbit, it is closer than Neptune for 20 years out of its 249 year orbit. Pluto crossed Neptune's orbit January 21, 1979, made its closest approach September 5, 1989, and will remain within the orbit of Neptune until February 11, 1999. This will not occur again until September 2226.\n\nAs Pluto approaches perihelion it reaches its maximum distance from the ecliptic due to its 17-degree inclination. Thus, it is far above or below the plane of Neptune's orbit. Under these conditions, Pluto and Neptune will not collide and do not approach closer than 18 A.U. to one another.\n\nPluto's rotation period is 6.387 days, the same as its satellite Charon. Although it is common for a satellite to travel in a synchronous orbit with its planet, Pluto is the only planet to rotate synchronously with the orbit of its satellite. Thus being tidally locked, Pluto and Charon continuously face each other as they travel through space.\n\nUnlike most planets, but similar to Uranus, Pluto rotates with its poles almost in its orbital plane. Pluto's rotational axis is tipped 122 degrees. When Pluto was first discovered, its relatively bright south polar region was the view seen from the Earth. Pluto appeared to grow dim as our viewpoint gradually shifted from nearly pole-on in 1954 to nearly equator-on in 1973. Pluto's equator is now the view seen from Earth.\n\nDuring the period from 1985 through 1990, Earth was aligned with the orbit of Charon around Pluto such that an eclipse could be observed every Pluto day. This provided opportunity to col
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10 planets have been discovered so far. 9 of them have been registered. The 10th one was discovered in 1930 & has been claimed to be larger than pluto & rocky in nature. It is currently about 97 times farther from the sun than Earth, or 97 Astronomical Units (AU). For comparison, Pluto is 40 AU from the sun. The object was so far away, however, that its motion was not detected until they reanalyzed the data in January of this year. In the last seven months, the scientists have been studying the planet to better estimate its size and its motions.
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Pluto is the smallest planet, recent reports says that pluto is not further considered as one of the planet cause it is actuallay only 3/4 of the moon...........Pluto has one moon named Charon
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That is a really intersting question.\n\nI'm pretty sure atoms are more spaced... let's find out!\n\nSolar system in km\n\nPlanets in our solar system (diameter)- About 4880 Merc (I hate pluto and refuse to call it a planet) to 142,984 Jupt\nSun- 1.392*10^6km\nSun to planets distance (semimajor axis) - from 5.79*10^7 km to 4.5017*10^9 km\n\nDistance to planet size ratio -\nBig planet farthest - 31,483.94 (it's about 30,000 planet lengths)\nSmall planet closer - 11,864.75 (it's about 12,000 planet lengths)\nDisance (half way point) to sun size ratio - 1,637.79 (it's about 1,500 star lengths)\n\n\nHydrogen atoms in pm (pico meter)\n\nAn electron: 10^(-6)pm\nH nucleus - .01 pm\nSize of H atom (distance apprx) - 250 pm\n\nDistance to electron size ratio:\n2.5*10^(8) (it's a hell of a lot of electron lengths)\n2.5*10^(4) (it's about 25,000 neucleus lengths)\n\nSo there is much more space in an electron... the distance compared to the size of things is on a much higher order.  Plus we must remember that I used the smallest atom (others would have other shells of electrons a little further out but slightly bigger nuclei as well) and I used our solar system... other solar systems we have detected have big planets much closer to their stars.  Perhaps the electron's distances  more comperable to the distances between galaxies???  Wild guess.  My... calculator is too tired to figure it out. haha
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July 29, 2005: "It's definitely bigger than Pluto." So says Dr. Mike Brown of the California Institute of Technology who announced today the discovery of a new planet in the outer solar system.\n\nThe planet, which hasn't been officially named yet, was found by Brown and colleagues using the Samuel Oschin Telescope at Palomar Observatory near San Diego. It is currently about 97 times farther from the sun than Earth, or 97 Astronomical Units (AU). For comparison, Pluto is 40 AU from the sun\nThe planet's temporary name is 2003 UB313. A permanent name has been proposed by the discoverers to the International Astronomical Union, and they are awaiting the decision of this body before announcing the name. \nAm I right U_EVERYONE_K
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in relation to the other planets in our solar system... our moon is bigger than pluto but smaller than the other planets.\n\nin relation to other moons of other planets in our solar system... it is the 5th largest out of all the other planetary satellites.\n\nthe exact figures are at the link below:\n-(this other link might help as well)