Until the very latest moment of his existence man has been bound to the planet on which he originated and developed. Now he had 81 ______ the capability to leave that planet and move out into the universe to those worlds which he has known previously only directly. Men have 82 ______ explored parts of the moon, put spaceships in orbit around another planet and possibly within the decade will land into another planet 83 ______ and explore it. Can we be too bold as to suggest that we may be able 84 ______ to colonize other planet within 85 ______ the not-too-distant future Some have advocated such a precdure as a solution to the population problem, ship the excess people off to the moon. But we must keep in head the billions of dollars we might 86 ______ spend in carrying out the project. To maintain the earth’s population at its present level. We would have to blast off into space 7,500 people every hour of every day of the year. Why are we spending so little money on space exploration 87 ______ Consider the great need for improving many aspects of the global 88 ______ environment. One is surely justified in his concern for the money and 89 ______ resources that they are poured into the space exploration efforts. But perhaps we should look at both sides of the coin before arriving hasty 90 ______ conclusions.