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Only one; its gravity, which attracts everything nearby.

Oh, were you asking something like "Why should we go to Uranus?" That would be difficult to know, since it's so far away. There are no raw materials there that would be worth it to transport back to someplace warm (Uranus is VERY far from the Sun...) and we aren't sure what sorts of things might be out there.

We believe that the atmosphere of Uranus is primarily light gasses such as hydrogen, so it might be useful as a refueling stop on our way outbound from the Sun to other star systems.

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12y ago

What else can I help you with?