26/03/2023
Going to the moon
Before scientists could think of sending a person to the moon, they needed to find out about the environment on its surface. In particular, they were concerned about the surface. In particular, they were concerned that the surface was covered with dust and that it would damage a spaceship’s complex equipment. So, in order to gather sufficient information about the moon’s surface, scientists developed metal explorers called satellites.
The space Age began on the fourth of October 1957. On that day, Russia launched the world’s first satellite into space. It was followed in January 1958 by an American satellite. In September 1959, another Russian satellite crashed on to the moon’s surface. Then only a few weeks later, one more Russian satellite flew right round the moon, taking photographs as it went.
Through information sent back to earth by these satellites, scientists discovered that nobody could live on the moon for more than a few seconds with protection. Since there is no air and the pressure is very low, in full sunlight the temperature rises to over 100C. As a result, our blood would quickly boil.
In order to make a journey to the moon, therefore, astronauts need special clothes, food and medicine. In addition, in order to escape from earth’s gravity, a spaceship must reach a tremendous speed very quickly. So to make this possible, spaceships must have very powerful engines that use a lot of fuel. In fact, when it takes off, more than ninety percent of a spaceship's load is fuel.
Questions
1. What did scientists have to do before sending an astronaut to the moon?
2. What were they particularly concerned about?
3. The space race in the 1950s was between which two countries? Which country won it?
4. What is the environment on the moon’s surface like?
5. Why do astronauts need special clothes, food and medicine?
6. Why do spaceships need so much fuel?