might reconsider the EXCLUSION OF PLUTO, THE PLANETS IN THE SOLAR SYSTEM?
Originally a planet was a wandering star. Then it was something moving across the sky. Later he was considered something moving around the Sun The criterion that determines when an object must be classified as a planet has changed over time .
now know that there are many objects that are out of the sun, orbiting around this and have a comparable size to Pluto. Entonces, if we consider Pluto a planet also should qualify as planets to these objects. The world knows that Pluto is not unique.
According to the International Astronomical Union p o be considered a planet, a celestial body must be in orbit around a star without being itself a star, you must have sufficient mass for its that own gravity becomes a figure nearly spherical and in hydrostatic equilibrium maintained. also must have a clear path.
The need to define first what a planet stems from technological advances that have allowed astronomers to look further into space and measure more precisely the size of celestial bodies in the Solar System.
Pluto was until 2006 the farthest planet Earth. Continued being a planet, but within the new category of so-called plutons or dwarf planets, who distinguished themselves in lclassical planets that you take No more than 200 years to orbit around the Sun
In this category fall two more bodies, Xena and Ceres . Thus, the number of planets in the Solar System would 1 to 1 at least for now and is believed to probably be about 20 instead of 9 we have been taught in the past 70 years .
If in 1930, when it was discovered , astronomers have realized that Pl or ton is smaller than our moon and has a mass significantly below 1% a of the Earth, to best would have created a special designation for it, said astronomer Owen Gingerich .
That discussion intensified in 2003, when astronomers or s of the California Institute of Technology discovered UB 313 l counterbore Xena, after the warrior princess of TV, which is one , of more than a dozen celestial bodies in the solar system , different from the traditional planets, which are or more mass and size similar to Pluto .
Gingerich, Professor Emeritus of Astronomy and History of Science at the Center for Astrophysics Harvard-Smithsonian, told Reuters that the status of Pluto is clearly very different from Jupiter, Saturn, Uranus and Neptune . Xena and Pluto are large icy bodies that reside in the Kuiper Belt , by traveling thousands of bodies floating , beyond Neptune. The Hubble Space Telescope images put the diameter of Xena over Pluto.
One of the reasons, not scientific, but practical to reject the exclusion of Pluto's planet status, is that it forces to update textbooks and the educators teach again the foundation of our Solar System.
As mentioned before there are other Plutos further away in the solar system, where it is more difficult to identify them, says David Rabinowitz of Yale University, one of the astronomers who discovered 2003 UB313 few years ago. This object has a diameter of 300 km, than Pluto and found 13 additional bodies is round and orbiting the sun.
The IAU (International Astronomical Union) says that we must all accept that we have eight planets. Adds thatin the future, only an object bigger than Mars could be considered a planet.
But not everyone believes that science has the right to change the accepted wisdom for years and has in his head. Culture has embraced for over 70 years, the idea that Pluto is a planet and most scientists have realized that the word planet and not theirs.
Michael Brown, one of the astronomers who desc2003 UB313 Ubri says that from now on they would ignore those pesky debates of the scientists. The planets of our Solar System should be defined by what it says culture. Pluto is a planet because it considers the culture.
On the other hand, a Wikipedia article said that the reason that Pluto does not meet the third condition of the UAI is that Pluto's orbit crosses that of Neptune. The above explanation expressed in such terms seems an argumentor valid to remove Pluto from the list of planets, since in that case, Neptune could not be a planet . If Pluto's orbit crosses that of Neptune, Neptune also intersects with Pluto and therefore are planets or both, or neither is.
THE UAI answers this question, arguing that Neptune is a gas giant very similar to the other Jovian planets, while Pluto is a ball of ice, a very small the order of Earth's moon and less than other moons.
Finally, most advocates of maintaining the status of planet Pluto, astronomers are Americans who do not want the only planet discovered by an American citizen, loses its status in relation to the scientists and astronomers discovered by Europeans.
Conclusion
From a rigorous and scientific view, according to the IAU definition, Pluto should not be considered a planet. From all the above, the only valid argument to see re reconsider its inclusion within the planettraditional culture as is the l. For ordinary people there is no difference between a planet and a dwarf planet traditional, at least, this generation will remember Pluto as the ninth planet in the solar system. The new generations to be taught once again that there are only 8 planets, Pluto or forget or have a better understanding of many trans-Neptunian objects. Even ordinary people see this discussion as a Byzantine discussion more. Remember that pointless discussions are characterized not contribute anything. One of the most famous, which happened at the dawn of Christianity, was the gender of angels. Who really cares, or it can affect our lives, whether angels are male or female? CH
Sanin JUAN FERNANDO E
