热量探测器有没有检测到生命迹象？

Are the thermals picking up any signs of life?

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这些探测器还让科学家们认为，在木卫二的表面之下，有一个释放出火山的热量的岩石内核。

The probes have also made the scientists think that under its surface, Europa has a rocky core giving off volcanic heat.

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RTG已为许多太空任务提供动力，包括美国宇航局的“卡西尼号”和“新视野”探测器。在放射性物质的小球衰退过程中可以产生出热量，从而将其转化为电能。

RTGs power many space missions — including NASA's Cassini and New Horizons probes — as the slow decay of small pellets of radioactive material produces heat that can be turned into electricity.

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