Tuesday, 22 December 2015

US restarts production of plutonium-238 to power space missions

Pellets of PU-238 are used to power deep-space probes

In an effort to avert an outer space energy crisis, the US Department of Energy's Oak Ridge National Laboratory (ORNL) has restarted production of plutonium-238 (PU-238) after almost 30 years. The civilian stockpile of the plutonium isotope used to power the radiothermal generators (RTG) that make electricity for US deep space probes has dwindled to only 35 kg (77 lb), so the first 50 g (1.7 oz) of plutonium oxide produced by the laboratory marks a major turnaround in American space capabilities.

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Section: Space

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from Gizmag Emerging Technology Magazine http://ift.tt/1QKE3Bi

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