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| | Navigating Celestial Currents: Science News Online, April 16, 2005 (Site not responding. Last check: ) |
 | | The Japanese spacecraft Hiten, while orbiting Earth, had ejected a basketball-size probe that was supposed to go into lunar orbit. |
 | | The much-larger Hiten, never intended for lunar orbit, lacked the fuel to reach the moon. |
 | | Five years earlier, Belbruno had used the dynamics of the three-body problem to design a hypothetical 2-year trajectory that rode gravitational currents from Earth to the moon without requiring fuel. |
| www.sciencenews.org /articles/20050416/bob9.asp (2659 words) |
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