Some people think， can gain new knowledge expanding human living space from space to obtain the new Others think don't agree because costly and astronauts safety problems
thirty percent of students think that，it's a waste of money to explore space and it isn't worth doing Because exploring the space is too far away from our daily However，other students hold the opposite opinion，they think that it's worth On one hand，it has applied to the weather forecast and On the other hand，it's hopeful to solve the world population problem and energy 刚好五句话，
someone thinks it can be get new knowledge to add the place for living，get new resources from the he orther thinks it can' because it will consumption a lot of money and it is a problem
