Planet Venus Essay Example | Topics and Well Written Essays - 1000 words

Planet Venus - Essay Example Venus is the closest planet to earth both in distance and radius and this proximity has meant that we know more about it than any other planet. As shown below a lost has been discovered regarding the planets formation, composition, and visibility. Picture of Venus Venus was formed approximately 4.6 billion years ago together with the rest of the solar system when our sun was formed in a cloud nebula referred to as the solar nebula (Cain). The cloud nebula must have been destabilized by a strong external force such as a nearby supernova as it began to deteriorate and with its crumbling down many stars were formed including our sun which due to its gravity attracted residue from the nebula that rotated in the form of hot rocks. The rocks would join together to form the planets of our solar system and one of them was Venus. It is believed that Venus must have collided with another huge object that affected its rotation as it the only planet to rotate in a clockwise manner. Proof of this is also seen in the fact that Venus has the longest day in the solar system the equivalent of 243 which is longer than the time it takes to revolve around the sun. In spite of this collision, Venus would still remain the biggest region within its location and it is believed it might have even absorbed the object that collided with it. While Venus is similar to earth in size being 95 % the size of our planet and given their close proximity it is likely that they formed during the same time. Venus does however have some stark differences that have made it be nicknamed earth’s evil twin by scientists. Comparative photo of Venus and Earth by NASA The lower atmosphere of Venus is filled with Carbon Dioxide and nitrogen while the upper atmosphere has a strong presence of sulphur dioxide which makes the temperatures of Venus extremely high due to a Greenhouse effect. With recordings of over 460? Centigrade the temperature on Venus are the hottest recorded on any planet even surpass ing Mercury which is the closest to the sun and the sulfur fumes make the environment acidic as it rains sulfuric acid in the upper atmosphere. These factors make Venus a lifeless planet as the places are highly inhospitable for terrestrial life as we know. The surface of Venus unlike other planets does not have craters due to meteorites and two theories have arisen to explain this: either the gases are so thick that any object that enters the atmosphere will burn up due to the air pressure with the exception of the largest of meteorites, or the planets volcanoes have been erupting frequently and so cover any asteroid collisions that have occurred (Redd). The planet does not have any water on the surface due to the high temperatures but it does have two huge continents that have mainly volcanic plains. Venus also lacks a magnetic field like that of the earth and it is thought that the main cause of this is that the core has cooled down significantly thus lacks many ionized particles . Several projects have been initiated to send probes to Venus so as to explore the planet a significant number of which were done by the USSR during the cold war era where it was competing with USA in the space race. The first successful landing was done in 1970 by the Venera -7 space probes however, several fly by missions had been done before it. The Venera successfully transmitted date from the planet’s surface regarding its composition and in 1975 the Venera – 9 sent the first images from the planet. From then other probes have been sent as well as fly by missions conducted with the European Union sending its own orbiters to study the planet (Anatoly). Photo of surface of Venus from Nasa 2005 Venus is a highly inhospitab