*You need a hot source and a cold sink to transform energy.* Only if it's therma... | Hacker News

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cperciva on July 30, 2014 | parent | context | favorite | on: A Nuclear Probe to Explore Earth’s Interior

You need a hot source and a cold sink to transform energy.

Only if it's thermal energy. Given the small amount of power needed, they could easily use a betavoltaic generator.

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