China’s ‘artificial sun’ sets nuclear fusion record, runs 1,006 seconds at 180 million°F
(charmingscience.com)
And that is precisely why the Mars Polar Lander failed.
https://everydayastronaut.com/mars-climate-orbiter/
Face it, the USA has defined the inch as 25.4 mm. It did so in 1933. The country is already metric, it's been metric for 92 years.
It's time.