Pluto: A Planet? Many issues have arisen from the debate whether or not Pluto is a planet. Some astronomers say that Pluto should be classified as a “minor planet” due to its size, physical characteristics, and other factors. On the other hand, some astronomers defend Pluto’s planet status, citing several key features.
... Americans take for granted the technology that saves their lives in car crashes, firefighting, airplane crashes, and countless other applications. Much of the generation from the 1960’s may remember how inspired they felt by NASA’s ambition to do something as amazing as walk on the moon. Today, that inspiration is found in many smaller; yet still significant, creations for NASA programs. Somebody once dreamed of capturing an asteroid, and now NASA strives to make that dream come true. For those people who stare at the sky and question the twinkling lights blinking at them, NASA endeavors to study the more advanced systems of stars by using Pluto as a scale model. Simply because they promote better inventions, encourage creative dreams, and produce new actualities, NASA programs are worth every penny and Americans need to reconsider where they would be without NASA.
...rst two letters of the name Pluto-was chosen as the planet’s astronomical symbol. Unfortunately, we learn later that Lowell’s Planet X theory is incorrect. In 1978, Pluto’s mass was found with the discovery of Charon, Pluto’s moon. Pluto, being a small planet, would have weak gravity. Therefore, this diminutive gravity could not affect the orbits of Uranus and Neptune. The International Astronomical Union reclassified Pluto as a dwarf planet in 2006. It was also revealed later that the strange orbits of Uranus and Neptune were due to the erroneous value of Neptune’s mass.
Throughout history the definition of planet has changed greatly. The Greeks defined a planet as an object that was a “wanderer” in the sky. This was to say that a planet was an object that changes position relative to the background stars. This included the 5 planets visible to the human eye (Earth was not considered a planet) and sometimes included the Sun and Moon. The definition of planet was changed and reworked until 2006, when the current official definition was created. This definition is as follows: “A planet is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood
Whenever we watch movies about space, the movie tends to influence our perspective of what is out there in space and how things work. Because of people’s lack of knowledge, it is easy for them to accept what the movies or pictures present to them. Therefore, there are many misconceptions in astronomy of how things really work out in the universe. In Neil Comens’ book, Heavenly Errors, he pinpoints over 1600 misconceptions! For example, many people have several different theories of how the moon changes shape every night or why the stars twinkle in the night time sky.
Since the beginning of human fascination with outer space, the question “Is there life on other planets?” has existed and has waited to be answered. Early astronomers looking to find life on other planets were brutally punished by the Catholic Church. For years, people saw these astronomers as heretics for going against the church and undesirable, but today there might be evidence that supports these astronomers. Today, we find that people are still split between believing in alien life or not. People devoted to a religion tend to disagree with the possibility of life anywhere but Earth as it goes against their beliefs. However, with the increase of realistic movies about aliens and very convincing theories, many young people are beginning to believe that life on other planets does not seem so radical after all. Each day, scientists find more and more predictive evidence that leads most of them to believe that there is life on other planets.