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Why haven't we sent a robotic space shuttle out into the universe to see how far we can go and explore?

I know humans wouldn't be able to survive 100 years on there, but at least this way, we could use remote controls to travel this far.

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A robotic space shuttle would be a costly waste. We have already sent out probes which are now on the outermost fringes of our solar system. They are so far away that we can only recieve very weak data from them though if any at all still. Remote controlls are a problem, because radoi signals take a long time to reach the target. The probes on Mars tak like 20 hours to communicate with, and they're relatively close to earth in comparison...

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Oh we haven't?

I thought that was the deep space project