The development of tourism has led to a possibility that space travel will be widely available in the future. However, I would contend that this form of travel is the negative development for the following reasons.
To begin with, there are many negative aspects of space travel. Firstly, the equipment required for this means of travel is relatively expensive because money needed to produce aircrafts is far more than the amount for other vehicles. Secondly, space tourism causes environmental contamination. When operating, aircrafts release huge amount of exhaust fumes into the surroundings, and the ozone layer will be seriously affected while the rockets are launched. Finally, travellers would face the risk of problems related to health. Visiting a strange star is a potential danger because there are circumstances that we cannot control or give first aid whenever necessary.
Some people may claim that space travel can broaden our knowledge of the universe. However, I believe that planets where no life exists have nothing to visit, except for stones and rough surfaces. In lieu of taking the tour, people can have many other ways to gain knowledge of the planets and the universe by reading science books and watching science movies to be safer and less costly. The purposes of travelling base largely on relaxation and discovery; therefore, no justification would be rational to justify the growth of space tourism. That is the reason why many people reject the development of space travel.
In conclusion, I firmly hold the view that space tourism has many drawbacks than benefits, and the development of this industry should not be promoted.
Hello everyone, today I will talk about Mars, the 4th planet in our solar system. The name of Mars originally comes from the name of the Roman god of war and agriculture. It may not seem like these two things go together, but they do. Mars protected those who fought for their communities and stayed home to raise crops for food. Mars has two natural satellites, and their names are Phobos and Deimos. With a radius of 2,106 miles (3,390 kilometers), Mars is about half the size of Earth. The atmosphere of Mars is much thinner than Earth's. It contains more than 95% carbon dioxide and much less than 1% oxygen. Mar's temperatures are from -151°C to 20°C. Mars is colder than Earth. If you were to stand on the surface of Mars on the equator at noon, it would feel like spring at your feet and winter at your head. Mar's surface is rocky, with canyons, volcanoes, dry lake beds and craters all over it. It's called Red Planet because iron minerals in the Martian soil oxidize, or rust, causing the soil and atmosphere to look red. One day on Mars takes a little over 24 hours. Mars makes a complete orbit around the Sun in 687 days. Thanks for listening.
