Comment Blame these Space News websites (Score 1) 74
They all seem to do it - Space.com, Spaceflightnow.com, Spacefellowship, Nasaspaceflight.
They know their audience is educated yet they persist in writing articles with both metric or imperial units. Or worse, they mix them as in this instance. They also take the let-me-convert-everythgin-for-you approach and put the complementary units in parentheses.
Why they don't just stick to one measurement system - SI makes the most sense - I do not know. However I do believe spaceflight enthusiasts are NOT idiots.