How many planets do we have now,I heard other day there had been recent discovery?
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A new object, 2003 UB303, was discovered in orbit beyond Pluto. It's preliminary name is Lila. There is still debate as to whether or not it is actually a planet or a large asteroid. This is the same as the current debate about Pluto.
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in our solar system: 9\n\neven though larger bodies exist in our solar system, we're too used to having 9 planets to ever change.
295059
They discover new planets in the universe everyday. But 10th planet in our solar system has been discovered. It has been couple of months, though. You can read more here: http://www.nasa.gov/home/hqnews/2005/jul/HQ_05209_10th_Planet.html
65145
The newest planet is Sedna. It could be the 10th planet on our solar system.
512884
There are 9 bodies in our solar system officially recognized as "planets" by the International Astronomical Union (IAU).\n\nThere are a number of large bodies, such as asteroid Ceres (between Mars and Jupiter), and Sedna (way out beyond the Kuiper Belt) that are considered candidates, but are unlikely to ever be recognized as planets.  Pluto is sometimes considered too small to be called a planet, but just for historical reasons, the IAU is unlikely ever to "downgrade" it.  \n\nIn 2003 a large body was discovered outside the orbit of Neptune, currently called UB313, and appears to be larger than Pluto.  The IAU is reviewing the definition of "planet" and is scheduled to make a decision in September of this year (2006) as to whether UB313 is officially the 10th planet.  Hopefully then they will give it a cool Greek name. :-)
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Discovery of the 10th planet!  Recent discovery.  Not much info. yet so no one can say if you are wrong on any point!
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well, scientists are redefining the word "planet", so pluto might get excluded as a planet, and we might have only 8, or if pluto is a planet, 8 other bodies will be planets. so there could be 17 planets
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New planet, discovered by the Samuel Oschin Telescope at the Palomar Observatory near San Diego, Calif., on Jan. 8, 2005,  is yet to be formally named.\n\n(This  newly-discovered object is more distant than the mysterious planetoid SEDNA discovered in 2003. Sedna is designated 2003 VB12.)\n\n Is at least as big as Pluto and about three times farther away from the Sun than Pluto. It is very cold and dark.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. \n\nThis places the new planet more or less in the Kuiper Belt, a dark realm beyond Neptune where thousands of small icy bodies orbit the sun. The planet appears to be typical of Kuiper Belt objects--only much bigger. Its sheer size in relation to the nine known planets means that it can only be classified as a planet itself
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The simple answer is we don't know..... we're still developping the technology to find them.\n\nOf the estimated 70 sextillion stars in the known universe, (that is 70 000 000 000 000 000 000 000, or 230 billion times as much as the 300 billion in our own Milky Way Galaxy), we've only found about 180 - 190 Planets outside our own Solar System so far... and that's only indirectly with only one seen so far (using an Ifra-Red telescope or something).
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According to the authority of the IAU, there are nine planets in our solar system. In increasing distance from the Sun they are (with the astronomical symbol in brackets):\n\nMercury (☿) \nVenus (♀) \nEarth (♁) with one confirmed natural satellite, Luna (the Moon) \nMars (♂) with two confirmed natural satellites, Phobos and Deimos \nJupiter (♃) with sixty-three confirmed natural satellites \nSaturn (♄) with forty-six confirmed natural satellites \nUranus () with twenty-seven confirmed natural satellites \nNeptune (♆) with thirteen confirmed natural satellites \nPluto (♇) with three confirmed natural satellites, Charon, S/2005 P 1 and S/2005 P 2 \nHowever, there is some pressure for Pluto to be reclassified as a Kuiper Belt object, especially in light of the discovery of 2003 UB313. This object, however, has not yet received a definitive classification from the IAU.\n\nSedna was widely touted as a planet when it was discovered in 2003, as it was the largest object found since Pluto. However, mainly due to its size still being smaller than Pluto's, it did not achieve planetary status from the IAU. However, the discovery in 2005 of 2003 UB313 (nicknamed Xena), with a size and mass larger than Pluto seems to have forced the issue. As of January 2006 it has not yet been accepted as a planet, but the IAU is expected to announce a definition of a planet soon, which will likely either see 2003 UB313 become a planet, or have Pluto stripped of its status.
67576
There might be a million planets in space, but not in our solar system...
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There are ten planets in our solar system namely mercury,venus,earth mars,jupiter,saturn,uranus,neptune,pluto\nand\n2003-UB313 is the official name of the object that is considered to be a contender for the title of "10th planet". As of August 1st, 2005 the IAU has yet to confirm whether this object will be officially be recognized as the 10th planet in our solar system. This little page will follow events and provide more information when available.\nOfficial Name:  2003 UB313  \nProposed Name:  Unknown\nThe name Xena is rumored to be the name submitted to the IAU for approval, althought there is no official confirmation of the name. "..that was our tongue-in-cheek internal name, never intended for public consumption," says Professor Brown \nDiscovered By: Michael Brown, professor of planetary astronomy at California Institute of Technology (Caltech) and colleagues Chad Trujillo of the Gemini Observatory and David Rabinowitz of Yale University.\n\nFirst photographed in 2003 using a 122cm telescope at the Palomar Observatory. \n \nEstimated Size:  approx 2700 km (1,700 miles) in diameter\nThis is the estimate as of August, 2005. From Wikipedia - Although the object's diameter is not yet well determined, it is estimated to be between 2,390 and 3,550  km . The amount of light it reflects (its albedo ) seems to be quite high, and initial observations show that methane ice is present on the object's surface. Both these properties make it more similar to Pluto than previously discovered large outer solar system planetoids .  \nOrbit: 560 years \nestimated one solar orbit per 560 years.  \nDistance from Sun:\n approx 9 billion miles / 14.4 billion km\nThis is around 100 times the Earth's distance, or 3 times Pluto's distance from the Sun. \nWhere is it Now?  At present, it is near its farthest point from Earth, but in about 280 years, it will be as close as Neptune, (the eighth planet, discovered in 1846).
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Yes, other stars with orbiting planets have been discovered. One is Upsilon Andromedae.
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The 10th planet was discovered last summer.\n\nJuly 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. \n\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.
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The new things they discovered are Sedna and Quaoar. So there could be 11 planets\nThe planet Quaoar  is the 11th  planet in the meridian solar system . Its orbit is different than the other planets in our solar system.  The surface of Quaoar is barren it consists mainly of hard rock and ice there is a light atmosphere around the planet Quaoar but it's not fit for humans. There are no life forms on the surface of Quaoar it is a dead planet and you could say the planet Quaoar is a large rock trapped in the darkness of the Kuiper belt in a orbit around our sun. \n\nThe planet Sedna is the second most reddish planetary body in the Solar System, after Mars. Although inclined by only around 11.9 degrees from the ecliptic where the eight major planets orbit, Sedna's distant orbit is extremely elliptical indicating that its formation and orbit may have been influenced by by a passing nearby star during the early years of the Solar System, when Sol formed out of a molecular cloud with many other closeby stars around 4.6 billion years ago. There is indirect evidence (an unexpectedly slow 40-day rotation) that Sedna has its own moon, which astronomers hope to confirm with the Hubble Space Telescope (more information and images from NASA. The icy object will move closer to the Sun over the next 72 years -- to 76 AUs of Sol -- before receding back towards the inner Oort Cloud. \n\nThis is about their discoveries: http://science.nasa.gov/headlines/y2005/29jul_planetx.htm\nhttp://news.bbc.co.uk/2/hi/science/nature/3511678.stm
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The astrobiology folks at NASA have calculated that there are between one and thirty billion habitable planets in our Milky Way Galaxy.  If our solar system is typical,  you can multiply that by about 10 to get total planets: between 10 and 300 billion.  \n\nSo where is everybody?
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There are actually several "planet like" objects beyond Pluto in an area called the Kuiper belt that contains thousands of objects that circle the sun.\n\nAt present none of them have been officially recognized as new planets. \nThe discovery of these new planet size objects including  2003 UB313 (nicknamed XENA), Sedna(in 2004) and Quaoar(in 2002 by the same team) have triggered a re-evaluation of the necessary criteria to call something a planet.\n\nIt is likely that this team at Caltech will  discover other objects to be added to the list of potential "planets" in our solar system.\n\n2003 UB313(nicknamed XENA unofficially) is larger than Pluto which leaves officials in a bit of dilemna.  How can they recognize Pluto as a planet and not this object?