Pluto: A Planet? Essays -- essays research papers fc

netherworld A Planet?Many issues pick out arisen from the debate whether or not netherworld is a planet. Some astronomers say that netherworld should be classified as a minor planet due to its size of it, physical characteristics, and other factors. On the other hand, some astronomers defend Plutos planet status, citing several key features.Indeed, most of the problem is that there is no formal definition of a planet. Furthermore, it is very difficult to invent one that would cease the solar system to contain all nine planets. I suggest that for an object to be classified as a planet, it must embody one-third characteristics. It must be in orbit around a star (thus removing the bigger satellites from contention), it must be too small to generate heat by nuclear fusion (so dwarf stars are excluded) and it must be massive enough to have collapsed to a more or less spherical ferment (which excludes comets, and most of the asteroids). These criteria would admit a few of the larger asteroids and probably some of the Kuiper belt objects as well, but adding a requirement for a planet to have a minimum diameter of 1,000 km would remove the larger asteroids from contention while retaining Pluto.Below are some brief reasons as to why Pluto may not be considered a planet with my rebuttal. Pluto is small compared to the other planets.Pluto is about fractional the size of the next smallest planet, Mercury. However, there is no scientific reason whatsoever to pick the size of Mercury as being the size of the smallest object to be called a planet. Mercury itself is less than half the size of Mars, and Mars is only about half the size of Earth or Venus. Earth and Venus are only about one-seventh the size of Jupiter. Why not pick one-tenth the size of Jupiter as the size of the smallest planet, if the cutoff is going to be chosen arbitrarily? In that case, Mars, Mercury and Pluto would all have to be classified as asteroids. If the size-cutoff between asteroids and plane ts is going to be randomly chosen, the cutoff value should be agreed upon in candid debate among interested scientists. Pluto is smaller than 7 moons in the solar system.Pluto is smaller than Earths Moon, Jupiters moons Io, Europa, Ganymede, and Callisto, Saturns moon Titan, and Neptunes moon Triton. On the other hand, Pluto is larger than the other 40 known moons in the solar system. There is no scientific reason to arbitrarily dis... ...Willem J. LuytenScience, New Series, Vol. 123, No. 3203. (May 18, 1956), pp. 896-897.Stable URL http//links.jstor.org/sici?sici=0036-8075%2819560817%293%3A124%3A3216%3C322%3ATPP%3E2.0.CO%3B2-LThis locate is very reliable. It is the Scholarly Journal Archive.2. LettersThe Planet PlutoGerard P. KuiperScience, New Series, Vol. 124, No. 3216. (Aug. 17, 1956), p. 322.Stable URL http//links.jstor.org/sici?sici=0036-8075%2819560817%293%3A124%3A3216%3C322%3ATPP%3E2.0.CO%3B2-LThis pose is very reliable. It is the Scholarly Journal Archive.3. inquiry Ne wsPlanetary Scientists are Seeing the UnseeableRichard A. KerrScience, New Series, Vol. 235, No. 4784. (Jan. 2, 1987), pp. 29-31.Stable URL http//links.jstor.org/sici?sici=0036-8075%2819870102%293%3A235%3A4784%3C29%3APSASTU%3E2.0.CO%3B2-LThis site is very reliable. It is the Scholarly Journal Archive.4. This is a site about Pluto. http//dosxx.colorado.edu/plutohome.html It is reliable since it is a part of an established academic institution.5. This is the NASA page for Pluto. http//pds.jpl.nasa.gov/planets/welcome/pluto.htm 6. Another site from NASA. http//imagine.gsfc.nasa.gov/docs/ask_astro/answers/pluto.html