what are the rocky planets in our solar system?
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The first four\nMercury, Venus, Earth & Mars\nand the last one\nPluto\n\nAll other planets are considered "gas planets"
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Planets like Mars, Jupiter.  The stars that are so far away that it takes light hundreds of years to reach Earth from there.\nGalaxies that contain billions of stars. We are in a Galaxy called the Milky Way.  The Ocean.
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There are 3 debri clouds in our solar system.  The main asteroid belt lies between the orbits of Mars and Jupiter.  Another cloud, the Kuiper Belt, lies beyond the orbit of Neptune.  Far beyond that, the Oort Cloud lies at the very edge of intersellar space.  The closer two belts lie pretty close to the plane of the ecliptic.  The Oort Cloud is scattered 360 degrees around the Sun.
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You can go to http://astrogeology.usgs.gov/SolarSystem/ , and get the data by clicking on the names of the planets one by one.
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A 10th planet has recently been found in our Solar System. It's designation right now is UB313. Check out the following website for more information:\n\nhttp://channels.isp.netscape.com/news/story.jsp?idq=/ff/story/0001/20060201/1301968801.htm&ewp=ewp_news_0106planet&floc=NI-slot1a
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Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto
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Try NASA's site:\nhttp://www.nasa.gov/vision/universe/solarsystem/index.html\n\nor Wikipedia links from:\nhttp://en.wikipedia.org/wiki/Planets
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The newest planet is Sedna. It could be the 10th planet on our solar system.
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Yes there are nine in our solar system, and as someone else mentioned Pluto is not really meeting the requirements to be defined as a planet. But the problem is rewriting the history books which won't happen so they will leave it as a planet... a "historical planet".\n\nIf we are talking about all known planets we have discovered, there are many. Extra solar planets have been found around distant stars for several years now. Not actually seen but found by measuring that planets gravitational pull on it's star. Of course we can't get an accurate count of all planets in the universe but we can use the "Drake Equation" to get a good idea.\n\nThe Drake Equation is:\n\nN = N* fp ne fl fi fc fL\n\nN* represents the number of stars in the Milky Way Galaxy \nAnswer: Current estimates are 100 billion.\n \nfp is the fraction of stars that have planets around them \nAnswer: Current estimates range from 20% to 50%.\n\nForget about the rest of the equation because it doesn't apply (looking for intelligent life)\nKeep in mind this equation is for our galaxy. They estimate 100 billion Galaxy's in our Universe (not to mention other planets that exist in other dimensions that we have discovered as a result of trying to solve the "unified theory" of everything) so…\n\nYou do the math!!!
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They are planets that have the ability to SUSTAIN life but have not yet been proven to contain life.  And yes, they are larger than our Earth.
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The LATEST (April, 2006) planets discovered in our GALAXY -\n(1)HD2246936 b\n(2)HD33283 b\n(3)HD86081 b\n\nSedna is the latest major object to be discovered in our solar system. It has NOT been officially designated as a planet yet, nor has its name been officially designated.
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Mercury, Venus, Mars, Jupiter, and Saturn.
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There are 6 planets that even the ancients knew about.  From the sun outward, they are Mercury, Venus, Earth, Mars, Jupiter, and Saturn.  (of  course, the ancients did not know that Earth was quite a bit like those little points of light that moved through the heavens).  William Herschel discovered Uranus in 1781. Neptune was discovered on September 23, 1846 by Johann Gottfried Galle. And Clyde Tombaugh discovered Pluto on February 18th, 1930.\n\nA few other discoveries may turn out to be planets.  In 2003 Mike Brown and two other astronomers discovered an object larger than Pluto, temporarily named 2003 UB313.  The International Astronomical Union will make a determination whether UB313 will be called a planet, and they'll also give it a proper name from mythology.  \n\nAnd astronomers have found other planet-sized bodies circling distant stars. As of May 18th, 193 of these "extra-solar" (meaning away from our sun) planets have been discovered.  See the exoplanet link below for more info.\n\nSo, to sum things up, from the sun outward, your list is:\n\nMercury\nVenus\nEarth\nMars\nJupiter\nSaturn\nUranus\nNeptune\nPluto\nUB 313 (maybe)\n\nand 193 planets somewhere else in our Milky Way galaxy.
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Nine in our solar system - Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto.
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More than 150 exoplanets have been discovered since 1995, but we have more and better techniques for finding planets now so we will be discovering more and more exoplanets.  On top of this, we now have ways to discover terrestrial (rocky) planets, not just the biggest gas giants.  Eventually, NASA is supposed to launch the terrestrial planet finder, which will find many earth-like worlds, assuming it actually gets launched.
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no, astronomers are trying to define what a planet is, but it isn't easy.  many astronomers favor the reclassification of the bodies in the solar system into three groups, the rocky terrestrials, the gas giants, and the ice dwarfs.  there are four rocky terrestrials and four gas giants, but there are hundreds of known ice dwarfs. this is called the kuiper belt.  kuiper belt objects are bodies like pluto, quaoar, sedna, 2003 UB313, and 2003 EL61.  2003 UB313 (the official name of xena) is about five percent bigger than pluto, but pluto was the first kuiper belt object discovered.\n\nread this page:\nhttp://en.wikipedia.org/wiki/Kuiper_belt
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Go to Heavens Above.  They have a lot of information about the planets, as well as satellites that have been placed in orbit or sent out into the solar system.\n\nhttp://www.heavens-above.com