This...but.  We need to gain the ability to make more of these things (or equivalent): <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Radioisotope_thermoelectric_generator" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Radioisotope_thermoelectric_ge...</a>