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At the present time (2011), there is no program underway to develop a manned

mission to Neptune, there is no research being done to advance the technology

that it would require, there is no planning being done for such a mission, there

is no funding for any research or planning with that purpose, there is no money

in the US space program's budget for any activity aimed toward planning or

developing such a mission, and at the moment, the US no longer has any ability

to launch people into space.

So at the present rate, it's liable to be a while.

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13y ago

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