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Fraser
2005-Sep-22, 08:25 AM
SUMMARY: The European Space Agency's SMART-1 mission will use a revolutionary ion engine to help it search for evidence that the Moon was formed after a violent collision of a smaller planet with the Earth. An ion engine works by accelerating ionized particles of gas in a constant stream for months or even years. Although the thrust is very low, it's very efficient and requires a fraction of fuel that traditional rockets use.

View full article (http://www.universetoday.com/am/publish/ion_drive_powered_spacecraft.html)
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