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One of NASA's robots on Mars is suffering technical difficulties in its mechanical arm

NASA says the Curiosity rover is experiencing short circuits, which could affect the machine’s ability to drill rocks. The space agency believes that the problem won't put the two and a half billion dollar mission at risk. After a number of tests, experts concluded that the most likely location of the technical fault is in the coil of the rover’s arm. Scientists say the next step is to repeat the tests so that engineers can better determine the extent of the damage.

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