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NASA Successfully Tests Revolutionary Rocket That Could Get Us to Mars Faster
(www.sciencealert.com)
This is a most excellent place for technology news and articles.
I see it quite simplistic: if it isn't listed as SI unit by the BIPM it isn't one.
Lending a helping hand on how to deal with derived units (e.g. km/h) doesn't mean those derived units are endorsed as SI units.
But that's just my point of view.