
During our teaching sessions on Thursday two of the people in our group did lessons on the planets in our solar system. Then came the question why is Pluto not a planet anymore? Therefore, I have decided to use that question for my blog this week and this is what I found according to National Geographic News:
Pluto is no longer considered to be a planet anymore because it does not fit the new definition of what a planet is, even though the word planet never really had an official definition before. The new definition of a planet is “a full-fledged planet is an object that orbits the sun and is large enough to have become round due to the force of its own gravity. In addition, a planet has to dominate the neighborhood around its orbit.” (National Geographic News). In addition to not meeting the requirement of the new definition Pluto also does not dominate it’s neighborhood or in other words is not much larger than its large moon, Charon, like all the other planets and also unlike the other planets Pluto does not keep its area clean. A planet that dominates its neighborhood tends to keep it
Pluto is no longer considered to be a planet anymore because it does not fit the new definition of what a planet is, even though the word planet never really had an official definition before. The new definition of a planet is “a full-fledged planet is an object that orbits the sun and is large enough to have become round due to the force of its own gravity. In addition, a planet has to dominate the neighborhood around its orbit.” (National Geographic News). In addition to not meeting the requirement of the new definition Pluto also does not dominate it’s neighborhood or in other words is not much larger than its large moon, Charon, like all the other planets and also unlike the other planets Pluto does not keep its area clean. A planet that dominates its neighborhood tends to keep it
clean by picking up or sweeping up comets, asteroids, and other debris to clear the path within their orbits. Pluto is now in a new classification and considered to be a dwarf planet along with 44 others.