What planet was discovered in the 1930's?
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Pluto, which was discovered in 1930, is but a dot of light in even the largest Earth-based telescopes. Pluto is 2/3 the size of Earth's moon but 1,200 times farther away, which makes viewing surface detail as difficult as trying to read the printing on a golf ball located thirty-three miles away.
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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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Jupiter is the largest planet orbiting our Sun.
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Mercury, Venus, Mars, Jupiter, and Saturn were all known in ancient times.  They are named after Roman mythological figures (other societies had different names for them, but the Roman names are what we use in the West).  Uranus (1700s), Neptune (1800s), and Pluto (1930) were discovered after the invention of the telescope, but the tradition of Roman Gods was continued by the discoverers.  The only discoverer's name I can remember is the famous astronomer William Herschel, who discovered Uranus.  I'm sure you can find out the names of Neptune's and Pluto's discoverers with a Google search.
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In the last few years of the 18 cetury (I estimate between 1793-1799) Baron Franz Xaver von Zach ordered a group of 24 astronomers to find a "missing planet" (the planet we know now as neptune) to solve the mystery of uranus's strange rotation.  However, the first asteroid discovered, 1 ceres, was discovered by accident by Giuseppe Piazzi.  Later, there were several other found.  The ammount keep going on through today!
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Possibly, as scientists have yet to make up their mind. One particular object, originally found in 2003 but confirmed two years later by Mike Brown (Caltech), David Rabinowitz (Yale University), and Chad Trujillo (Gemini Observatory), has renewed the old debate about what constitutes a planet since it is at least 5% larger than Pluto with an estimated diameter of 2400 km . It currently has no name, but has been given the provisional designation 2003 UB313, and has been nicknamed "Xena" by its discoverers, after the television character. It has many similarities with Pluto: its orbit is highly eccentric, with a perihelion of 38.2 AU (roughly Pluto's distance from the Sun) and an aphelion of 97.6 AU, and is steeply inclined to the ecliptic plane, at 44 degrees, more so than any known object in the solar system except the newly-discovered object 2004 XR190. Like Pluto, it is believed to consist mainly of rock and ice, and has a moon . Whether it and the largest Kuiper belt objects should be considered planets or whether instead Pluto should be reclassified as a minor planet has not yet been resolved.
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Uranus was the first planet to be discovered that was not known in ancient times; although it had been observed on many previous occasions, it was always mistakenly identified as a star. The earliest recorded sighting was in 1690 when John Flamsteed catalogued it as 34 Tauri. Flamsteed observed Uranus twice again. Sir William Herschel formally discovered the planet on March 13, 1781, but reported it on April 26, 1781, as a "comet."\n\nHerschel originally named it Georgium Sidus (George's Star) in honour of King George III of Great Britain. When it was pointed out that sidus means star and not planet, he rebaptised it the Georgian Planet. This name was not acceptable outside of Britain. Lalande proposed in 1784 to name it Herschel, at the same time that he created the planet's symbol ("a globe surmounted by your initial"); his proposal was readily adopted by French astronomers. Prosperin, of Uppsala, proposed the names Astraea, Cybele, and Neptune (now borne by two asteroids and a planet). Lexell, of St. Petersburg, compromised with George III's Neptune and Great-Britain's Neptune. Bernoulli, from Berlin, suggested Hypercronius and Transaturnis. Lichtenberg, from Göttingen, chimed in with Austräa, a goddess mentioned by Ovid (but who is traditionally associated with Virgo). The name Minerva was also proposed. Finally, Bode, as editor of the Berliner Astronomisches Jahrbuch, opted for Uranus, after Latinized version of the Greek god of the sky, Ouranos; Maximilian Hell followed suit by using it in the first ephemeris, published in Vienna. Examination of earliest issues of Monthly Notices of the Royal Astronomical Society from 1827 shows that the name Uranus was already the most common name used even by British astronomers by then, and probably earlier. The name Georgium Sidus or "the Georgian" were still used infrequently (by the British alone) thereafter. The final holdout was HM Nautical Almanac Office, which did not switch to Uranus until 1850.\n\nIn the Chinese, Japanese, Korean, and Vietnamese languages, the planet's name is literally translated as the sky king star (天王星).\n\nHope that's not too long for you!!\n\nP.S. I don't believe your claim that a professor wants a paper on a Saturday. I think you're curious, and impatient, and wanted to know sooner rather than later. It's OK to be curious as long as you own up to it. I'm not saying I'm sure you were lying, but I've got a hunch. Just don't be self-conscious about wanting information.
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Look Up The Big Bang Theory but this is the answer : In 1929, Edwin Hubble
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There are new planets being discovered all the time, but I assume you mean the new tenth planet in our solar system. \n\nThe discoverer has suggested the name Xena, after the television show. The official name is not due out for some time, and has to be decided by an international committee.
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Pluto's existence was mathematically predicted in 1905 by astronomer Percival Lowell. Its existence was finally proven in 1930 by Clyde Tombaugh. Pluto is the only planet (in our local solar system) to be discovered by an American.
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2003 UB313 is the name of the object.  "Xena" is the name given to it by the discoverer's team as a code-word.  Even Mike Brown (the guy who found it) says that it should not seriously be considered the name for it.  Brown is also the guy who helped find Sedna, an object a bit smaller than Pluto (2003 UB313 is actually larger than Pluto).\n\nNo planets have officially been added, or taken away, so neither 2003 UB313, nor Sedna are officially planets.  The problem is that there are a heck of a lot of objects the size of Sedna.  We are currently in meetings off and on discussing this "planet or not" issue.\n\nAs far as how long has it been there, we feel that it was formed at the same time all the other largish solid bodies in the solar system were formed, about 4.5 billion years ago.  It is red in color, made of ice, and if it were brought near the sun it would look like a really big comet.  It has always been there, it is just that only really in the last 10-15 years have we had the ability and instruments to really search for small worlds this far away from us.  The discovery of Pluto in 1930 involved a lot of luck.
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Wll the 10th planet is sedna.It has a vast amt. of ice on it.\nThe first detection of the long-hypothesized Oort cloud came in March 2004 when astronomers reported the discovery of a planetoid about 1,700 km (about 1,000 mi) in diameter.Pluto is about 2,360 km (1,475 mi) in diameter.\n\nThey named it Sedna, after a sea goddess in Inuit mythology in Greek Language.\nSedna was found about 13 billion km (about 8 billion mi) from the Sun. \n\nAt its farthest point from the Sun, Sedna is the most distant object in the solar system and is about 130 billion km (about 84 billion mi) from the Sun.
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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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maybe you wanted to write 10th planet, not 11th planet.\n\nmaybe there was such a thing but i don't see any records of it on nasa-s site.\n\nWhat i do see is the report of the 10-th planet being discovered, maybe that's what u  were reffering to.\n\nhere's the link\n\nhttp://science.nasa.gov/headlines/y2005/29jul_planetx.htm
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Uranus, the first planet discovered in modern times, was discovered by William Herschel while systematically searching the sky with his telescope on March 13, 1781. It had actually been seen many times before but ignored as simply another star (the earliest recorded sighting was in 1690 when John Flamsteed cataloged it as 34 Tauri). Herschel named it "the Georgium Sidus" (the Georgian Planet) in honor of his patron, the infamous (to Americans) King George III of England; others called it "Herschel". The name "Uranus" was first proposed by Bode in conformity with the other planetary names from classical mythology but didn't come into common use until 1850. \n\nGo to the site below.  It has all kinds of info, even on all of the moons.  I hope this helps :)
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The newest planet is Sedna. It could be the 10th planet on our solar system.
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It depends on what you mean by Planet X.\n\nBefore Pluto was discovered astronomer Percival Lowell made a prediction that there was another planet beyond Neptune. He did this by observing slight deviations in the expected orbit of Neptune. (The same process has allowed astronomers and mathematicians to predict the existence and location of Neptune based on slight irregularities in the orbit of Uranus.)\n\nLowell looked, but died before anything was found. Clyde Tombaugh resumed the search. By this time the mystery planet was called "Planet X." Eventually Tombaugh did discover a new planet, Pluto, but it was smaller than expected and not where Lowell had predicted. It is likely that Lowell was simply wrong and Tombaugh got lucky...\n\n...sort of. We now know that there are many objects in the far reaches of the solar system (beyond the orbit of Neptune) which are the inner part of the Kuiper belt. One of these has been found to be larger than Pluto.\n\nSo, while Pluto (Planet X) retains official planet status, it is largely for historical reasons. Had we discovered Pluto in the 1990s and not 1930s it is likely Pluto would never had been classified as a planet.\n\nHowever, it is possible that there is a large, say, Neptune-sized, object out there. Some evidence for this can be found in the distribution of Kuiper objects. But it is still very uncertain. Such a distance planet, could be called Planet 10, or, for roman numeral fans, Planet X. Such a large distant object would be very faint and move only slowly across the sky (making it hard to distinguish from a star).\n\nAnother meaning for "Planet X" is a Nibiru, a fictional planet based on one person's faulty knowledge of Sumerian artifacts, which has been taken up by various new age and pseudo-science looney groups. A couple of years ago "Nibiru" was supposed to pass close to Earth leading to floods, earthquakes, death, destruction, yadda yadda yadda. This "prediction" being based on one woman's (Nancy Lieder) telepathic communications with various aliens.\n\nJust as an aside, Ms. Lieder's aliens also told her that the Hale-Bopp comet of a few years ago - which lead to the suicide of one band of cult members - was just a "star." To make sure she wasn't swayed by actual observations of the cometary tale and motion across the sky she simply refused to look at it. Those pesky aliens!