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Neither was Voayger

• Florin_Andrei 9y ago
  That's a very good point actually. It was meant to flyby the outer planets, and its mission was extended when it refused to break down.
  • atomicnumber1 9y ago
    Officially you're correct. But from the start the people working on it had planned/designed it to go further.
    • isostatic 9y ago
      Opportunity was designed to work for about 3 months. It's been going more than 13 years.