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Discussion and Debate
Discussion and Debate
Physical & Life Sciences
Is Pluto A Planet?
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<blockquote data-quote="ViaCrucis" data-source="post: 75300262" data-attributes="member: 293637"><p>When Pluto was discovered, we didn't know about the many objects in our solar system which we now call "dwarf planets", and so Pluto was added to the list of planets in the solar system.</p><p></p><p>As we discovered more, and more Pluto-like objects in the solar system, there was a question: Do we say that there are dozens of planets? Or do we create a new classification for these smaller objects? This resulted in a new classification: dwarf planets. Pluto is one among many dwarf planets in the solar system, and so school children now only need to memorize eight planets instead of nine.</p><p></p><p>In 1801 astronomers discovered Ceres, and it was for several decades classified as a planet in the 1800's, but as more objects were discovered in what we call the asteroid belt between Mars and Jupiter, Ceres was reclassified from a planet to an asteroid. But then, when the new classification of dwarf planet was created, Ceres was also reclassified again as a dwarf planet. So this kind of reclassification isn't new, it happens sometimes when it becomes easier to talk about certain things, or as we learn more about them.</p><p></p><p>-CryptoLutheran</p></blockquote><p></p>
[QUOTE="ViaCrucis, post: 75300262, member: 293637"] When Pluto was discovered, we didn't know about the many objects in our solar system which we now call "dwarf planets", and so Pluto was added to the list of planets in the solar system. As we discovered more, and more Pluto-like objects in the solar system, there was a question: Do we say that there are dozens of planets? Or do we create a new classification for these smaller objects? This resulted in a new classification: dwarf planets. Pluto is one among many dwarf planets in the solar system, and so school children now only need to memorize eight planets instead of nine. In 1801 astronomers discovered Ceres, and it was for several decades classified as a planet in the 1800's, but as more objects were discovered in what we call the asteroid belt between Mars and Jupiter, Ceres was reclassified from a planet to an asteroid. But then, when the new classification of dwarf planet was created, Ceres was also reclassified again as a dwarf planet. So this kind of reclassification isn't new, it happens sometimes when it becomes easier to talk about certain things, or as we learn more about them. -CryptoLutheran [/QUOTE]
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