Venus Essay Research Paper Venus the jewel free essay sample

Venus Essay, Research Paper Venus, the gem of the sky, was one time know by ancient uranologists as the forenoon star and flushing star. Early uranologists one time thought Venus to be two separate organic structures. Venus, which is named after the Roman goddess of love and beauty, is veiled by midst twirling cloud screen. Astronomers refer to Venus as Earth # 8217 ; s sister planet. Both are similar in size, mass, denseness and volume. Both formed about the same clip and condensed out of the same nebula. However, during the last few old ages scientists have found that the affinity ends here. Venus is really different from the Earth. It has no oceans and is surrounded by a heavy ambiance composed chiefly of C dioxide with virtually no H2O vapour. Its clouds are composed of sulphuric acerb droplets. At the surface, the atmospheric force per unit area is 92 times that of the Earth # 8217 ; s at sea-level. We will write a custom essay sample on Venus Essay Research Paper Venus the jewel or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Venus is scorched with a surface temperature of about 482? C ( 900? F ) . This high temperature is chiefly due to a runaway nursery consequence caused by the heavy ambiance of C dioxide. Sunlight base on ballss through the ambiance to heat the surface of the planet. Heat is radiated out, but is trapped by the dense atmosphere and non allowed to get away into infinite. This makes Venus hotter than Mercury. A Venusian twenty-four hours is 243 Earth yearss and is longer than its twelvemonth of 225 yearss. Curiously, Venus rotates from E to west. To an observer on Venus, the Sun would lift in the West and set in the E. Until merely late, Venus # 8217 ; heavy cloud screen has prevented scientists from bring outing the geological nature of the surface. Developments in radio detection and ranging telescopes and radio detection and ranging imaging systems revolving the planet have made it possible to see through the cloud deck to the surface below. Four of the most successful missions in uncovering the Venusian surface are NASA # 8217 ; s Pioneer Venus mission ( 1978 ) , the Soviet Union # 8217 ; s Venera 15 and 16 missions ( 1983-1984 ) , and NASA # 8217 ; s Magellan radar mapping mission ( 1990-1994 ) . As these ballistic capsule began mapping the planet a new image of Venus emerged. Venus # 8217 ; surface is comparatively immature geologically talking. It appears to hold been wholly resurfaced 300 to 500 million yea R ago. Scientists debate how and why this occurred. The Venusian topography consists of huge fields covered by lava flows and mountain or upland parts deformed by geological activity. Maxwell Montes in Ishtar Terra is the highest extremum on Venus. The Aphrodite Terra highlands extend about half manner around the equator. Magellan images of upland parts above 2.5 kilometres ( 1.5 stat mis ) are remarkably bright, characteristic of damp dirt. However, liquid H2O does non be on the surface and can non account for the bright Highlandss. One theory suggests that the bright stuff might be composed of metallic compounds. Surveies have shown the stuff might be iron fools gold ( besides know as # 8220 ; saps gold # 8221 ; ) . It is unstable on the fields but would be stable in the Highlandss. The stuff could besides be some type of alien stuff which would give the same consequences but at lower concentrations. Venus is scarred by legion impact craters distrubuted indiscriminately over its surface. Small craters less that 2 kilometres ( 1.2 stat mis ) are about non-existent due to the heavy Venusian ambiance. The exclusion occurs when big meteorites shatter merely before impact, making crater bunchs. Vents and volcanic characteristics are even more legion. At least 85 % of the Venusian surface is covered with volcanic stone. Hugh lava flows, widening for 100s of kilometres, have flooded the Lowlandss making huge fields. More than 100,000 little shield vents dot the surface along with 100s of big vents. Flows from vents have produced long sinuate channels widening for 100s of kilometres, with one widening about 7,000 kilometres ( 4,300 stat mis ) . Elephantine calderas more than 100 kilometres ( 62 stat mis ) in diameter are found on Venus. Terrestrial calderas are normally merely several kilometres in diameter. Several characteristics alone to Venus include aureole and arachnoids. Coronae are big round to ellipse characteristics, encircled with drops and are 100s of kilometres across. They are thought to be the surface look of mantle upwelling. Archnoids are round to elongated characteristics similar to coronae. They may hold been caused by molten stone oozing into surface breaks and bring forthing systems of radiating butchs and breaks.