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Science 8 August 1986:
Vol. 233. no. 4764, p. 611
DOI: 10.1126/science.233.4764.611-a
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Erratum

The Voyager 2 spacecraft is powered by radioisotope thermoclectric generators. A decrease in output by this power source, not solar batteries (This Week in Science, 4 July, p. 7), may at some future time bring an end to the effective operation of the Voyager 2 spacecraft.

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