It is widely believed that space travel has been possible for some time, so some individuals believe that space tourism will be probably developed in the future. From my perspective, space travel would be both positive development because thanks to the development of space travel, humanity will be able to expand their knowledge in the field of astronomy that would have a useful impact on people lives. However, by evolution of space travel, space environment could become polluted which may lead to a deterioration of the planets and other cosmic objects.
On the one hand, space travel would be useful development because ordinary citizens would be able to explore space, hence, they also will be able to improve science. Nowadays only scientists or astronauts can go to space that sometimes limits the level of innovative projects, since scientists sometimes do not pay attention to some interesting details that an ordinary person may pay attention to. To illustrate, a resident went to space to explore another planet, so they could observe every tiny detail due to the breathtaking experience. Thus, they may take notes about all the features of the planet which after a while can be used by scientist to improve their own knowledge and different space projects.
On the other hand, space tourism can lead to pollution because people or machines, which will deliver individuals to space, will inevitably leave litter there. So far, due to the fact that ordinary people do not travel to space, there are not a plenty of waste. However, this situation could be changed in case humanity will have capability to travel to space. For instance, ten people went to a space station in order to observe unusual soil from the Mars. When they were going to this station, a rocket emitted harmful emissions due to the necessity to move a large number of people.
To sum up, space traveling is not only a negative development due to the probability of contamination but also is a positive evolution because of new view on space from ordinary people.