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Could the Moon Help Fuel the Earth?
Fossil fuels have been powering the earth for over 200 years, but reserves of coal, crude oil (原油) and natural gas may run out one day.
The long-term solution may lie nearly half of a million kilometers away on the moon. It contains large quantities of helium-3 (氦-3), a form of gas that could 【小题1】 (potential) be extracted (提炼), brought back to the earth and used as fuel without damaging the environment.
“The real 【小题2】 (attract) of helium-3 is that it is a nuclear process, 【小题3】 doesn’t release any greenhouse gases,” said 【小题4】 engineering professor. “That would be the 【小题5】 (big) advantage-nuclear power without nuclear waste, and it would be a goal for the earth.”
Present on the earth in small quantities, helium-3 【小题6】 (use) in medical diagnostics (医学诊断), but it is yet to be used as a source of energy. However, there are large enough quantities of helium-3 on the moon to power the earth for a thousand of years or so and provide the earth 【小题7】 all of the energy.
But 【小题8】 (bring) helium-3 back to the earth is a complex process. The gas, 【小题9】 (find) in the moon’s soil, would need to be heated to 600℃ before being extracted and transported back to be turned into fuel in nuclear power 【小题10】 (plant). Even so, the project is beginning to interest some of the world’s leading nations in the environmental and economic potential of helium-3.