Earth! They all started here, not visited!
Seriously, if you mean in terms of a flayby, all nine of the planets have had soem sort of flyby probe, even if it was just Voyager. Deep Horizon is currently on its way to the outer solar system to get us info on Uranus, Neptune, and Pluto as those are the least studied of all the planets. Mercury is hard ot sutdy because of its speed in terms of orbital mechanics and the high levels of solar radiation close to the Sun, but its the outer planets that have had the fewest flybys.
2006-07-24 04:04:53
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answer #1
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answered by But why is the rum always gone? 6
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Pluto, however that should change in 2015 when the spacecraft "New Horizons" reaches the planet.
2006-07-24 11:06:45
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answer #2
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answered by Kookiemon 6
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Pluto I think, because it is usaully the farthest away, all the otheres have been visited by satellites
2006-07-24 11:04:47
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answer #3
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answered by usmcr1371 1
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Mars is the only that HAS been visited by our soacecraft. The moon has been also, but it's not a panet.
2006-07-24 11:03:31
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answer #4
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answered by daffyduct2006 6
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pluto
2006-07-24 14:05:17
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answer #5
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answered by fas 2
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pluto
cause its too far off
and its too cold there
2006-07-24 11:04:20
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answer #6
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answered by frost fire 2
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