Physical Characteristics Essay Example | Topics and Well Written Essays - 1250 words

Physical Characteristics - Essay ExampleAll scientists do not unanimously accept the latest IAU launched definition of a planet that changed the status of underworld. They continue to view Pluto as the ninth planet. (Spinrad, 2004), (Stern, 2007)Kuiper rap is an unexplored region of the solar system that extends from retributive outside the domain of Neptune to quite a distance from the orbit of Pluto. It is similar to the asteroid belt in that it consists chiefly of minuscule bodies and one known dwarf planet, Pluto. nevertheless while the asteroid belt is made up of admixture and hard rock, the Kuiper Belt is composed mainly of frozen objects made up of dust and ice, called KBOs. They vary in sizing from small clumps of ice and dust to large bodies like the Pluto. It is the revolution of these objects that determines the disc-shaped structure of the Kuiper Belt. If their orbits are fitful in order to bring them into the inner solar system, they can be seen as comets which t urn into mishandle and dust when they get too near to the solarize. (Stern, 2007)During the year 1905, an American astronomer named Percival Lowell, observed that some cordial of gravitational force seemed to be disturbing the revolutions of Uranus and Neptune. In 1915, he postulated the live onence of another planet beyond Neptune and started his research from his Arizona observatory. Unfortunately, he found his death in 1916 before he could discover Pluto.But his works were carried on by the Lowell Observatory staff, and in 1929, Clyde W. Tombaugh, an assistant at the observatory, took pictures of the part of the sky that was in question with a very powerful wide-angled telescope. The next year he sight Pluto on three of the photographs. (Spinrad, 2004)However, the cleanly discovered planet seemed to be quite small to cause interruptions in the orbits of Uranus and Neptune. So, the calculations of Percival Lowell were rechecked by the later astronomers, and were found to be inaccurate confirming no disturbances in the orbits of Uranus and Neptune. Hence, discovery of Pluto was just luck through hard work. Later, in 1978, the U.S naval observatory at Flagstaff observed discovered a moon orbiting Pluto very closely, and named it Charon. (Stern, 2007)In 1951, Gerard Kuiper, a renowned Dutch American astronomer, predicted the heading of the Kuiper Belt. He and his colleagues expected that a belt composed of frozen volatile material might exist beyond the orbit of Neptune, just like the rocky asteroid belt lying between damage and Jupiter. Although the first few searches were unsuccessful, introduction of the charge-coupled device (CCD) in the late 1980s opened up a new gateway to space research. These devices were a lot more efficient in absorbing light than the disused photographic technology, allowing them to capture extremely dim objects. Thence in 1992, two astronomers, Jane Luu and David Jewitt, discovered the first Kuiper Belt Object, 1992QB1. (St ern, 2007)Physical CharacteristicsSize and OrbitPluto is approximately 39 times as far from the sun as the earth that is a distance of about 5.9 billion kilometers. It has an approximate diameter of 1,400 miles, which is about two-thirds the size of earths moon and less than a fifth of the earth itself. (Spinrad, 2004)It takes about 248 earth years to complete a full revolution around the sun, while it takes 6 earth days for a full rotary motion around its axis. As its orbit is elliptical in shape as