The article and the professor in the recording both argue about the feasibility of sending human to Mars. The professor in the recording disagrees with the statements in the article which believes traveling to Mars is difficult.

The article firstly argues about the insufficiency of food, water and oxygen in the space vehicles with limited space. However, the professor believes that hydroponics can be a solution, for it allows plants to grow in nutritious water instead of soil, making it possible for astronauts to have enough food. Furthermore, the cultivation of food can also be used in recycling water, as well as absorbing carbon dioxide and releasing oxygen by photosynthesis. Therefore, oxygen, water and food can be guaranteed in the space vehicles.

The professor also rebuts the article on the zero gravity problem. She claimed that since astronauts can currently stay in space stations around the earth for long periods of time by regular exercise and getting Vitamin and other necessary elements, the Mars travellers can also do the same thing. Hence, the second problem about the severe impact on human in zero gravity condition will not be a problem.

Last but not least, the professor also does not agree with the article on the point of solar radiation. She argues that solar radiation, though dangerous, does not happen all the time. In fact, the sun will release solar radiation only when it is active. Furthermore, equipments that can test the degree of the radiation can be put on the vehicles as well as a relatively light shielded space that reduces the radiation impact. When the radiation is high, the astronauts can simply stay there until the radiation is gone before working in other places in the shuttles with no shielding materials.