People said"Human being cannot control but anxious for searching the answer for the unknown things and this is the point to separate human from animals" I think this is approved by people's continuing searching for outer I'm sure we will not lose anything immediately if we stop searching for outer However I know as human being we cannot help but keep on looking for the new things in the unkown dark space which is far from our But who knows， maybe one day we will face a serious situation which force us make decision and move to other In that case we will thank you for our wise ancestors who decided contiune to do reasearch on space though they may not forcast that their descendants may need it one So let stop this discussion by another saying"Curiosity can push the whole world working"希望对你的学习有帮助
