Human travel to the moon and mars : waste of money or next frontier?
Americans are divided over the future of the U.S. space program. Some say it's time to send astronauts back to the Moon, as well as to Mars for the first time. They believe that exploring these worlds will lead to all sorts of payoffs, including new scientific knowledge, new sources of energy,...
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| Format: | EBOOK |
| Language: | ENGLISH |
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Lerner Publishing Group:Lerner Publishing Group
2011
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| Series: | USA today's debate : voices and perspectives |
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