How does space travel impact our lives? Is the money that is spent by governments around the world of more benefit than just satisfying someone's curiosity? This site gives us some insight into the benefits that we the earthbound ones get from space travel.
http://www.nasa.gov/externalflash/nasacity/index2.htm
Is it worth it? This is a necessary question to ask. Are we just being dazzled by the discoveries? What else could all this money go towards?
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