Business Insider is a US publication so they are using a unit that makes sense to their readership. Everyone in the US has a sense for the size of a football f

Business Insider is a US publication so they are using a unit that makes sense to their readership. Everyone in the US has a sense for the size of a football field. In this case it seems like an appropriate comparison. I immediately realize this is a significant change that would impact things like docks and boat ramps. This intuition works for any reasonable interpretation of "football field". If we are talking about how far Voyager has traveled then you may have an interesting critique.