Tpo 50 Integrated writting

The reading claims that in comparison to Moon, sending humans to Mars is implausible nowadays since this project requires overcoming enormous predicaments that astronauts might be confronted with. However, the lecturer finds all of the idea implausible and present some evidence to refute them.
First, the author argues that coming and back from earth to Mars takes a long time around 2 years which causes astronauts to face difficulty in order to supply their needed food, oxygen, and water with respect to the limited capacity of spaceship for storage high volume of these supplies. On the contrary, the professor highlights the fact that by utilizing hydropacin which is the technology to grow plants in water instead of soil. By doing so, not only this technology provide food crops in space, but it also could be conducted in a small environment. In addition, astounds can recycle the water used for cultivating in order to clean that and use freshwater for drinking. The last worth mentioning the advantage of this technology is that plants absorb carbon dioxide and release oxygen which guarantees the oxygen that is needed in the spaceship.
Second, the reading holds the view that zero gravity in Mars, gives rise to severe medical problems to astronauts including losing muscle mass and declining in bone density in the long run. In contrast, the lecturer dismisses the point due to the fact that astronauts spending several months in space, recently train how to manage these health issues by doing regular exercise in order to prevent a decrease in their muscle mass. Moreover, by taking vitamins and minerals such as calcium, they compensate for the adverse effect of zero gravity on their bone density.

Finally, the passage asserts that on the Mars trip, endanger astronauts' life by being exposed to precarious solar radiation which is normally absent in Earth due to the protection of the magnetic field in Earth. Furthermore, by constructing a protective shield for a spaceship, the weight of the vehicle increase so much that it can not usable. Conversely, the speaker brings up the fact that space radiation is not consistent and the sun radiates occasionally when has activity. In this regard, by constructing a small shield that does not add heavyweight to the vehicle, astronauts capable of doing their normal daily routine and go to the shelter in order to protect themselves during the activity of the sun which they are exposed to dangerous radiation.