Answer:
1. It is necessary that the risks and rewards of space exploration apply to all Americans. - Whatever mankind must undertake, free men must fully share
2. The knowledge gained from space exploration leads to a greater understanding of freedom. - Whatever mankind must undertake, free men must fully share
3. Achievements in space help increase the reputation of the United States. - No single space project in this the period will be more impressive to mankind
4. The discoveries made in space will have more significance than the breakthroughs of the past. - No single space project in this the period will be more impressive to mankind
Explanation:
According to this question, there are two main messages found in this passage. First, the message that no single space project in this the period will be more impressive to mankind. This conveys the idea that space exploration is the greatest enterprise ever undertaken. This is supported by two statements in the text. First, that the achievements of the United States in space will increase the reputation of the nation. And second, that the discoveries in space are more important than any other past enterprise.
On the other hand, the second message presented in the text is that whatever project mankind undertakes, it must be fully shared among all free men. This is supported by the idea that the risks and rewards of exploration must apply to all Americans. It is also supported by the fact that all free men will also gain a greater understanding of freedom by the knowledge that will be gained in space exploration.
