What are the problems scientists are trying to solve in order to get to Mars? list 5

1: You need to have gravity because having no gravity what it does is it can cause painful Health problems for astronauts.

2: The powerful cosmic radiation comes mostly from our sun which it can damage the electronic equipment on board and which creates health problems for the crew.

3:Water supply

4: Food supply

5: space suit limitation

the cost of college has risen faster than inflation for many years.

the high price of student services and administration are two reasons for the rapid increase in cost.

rosevelt. 1973. "slaves everywhere"