Well since it's in pounds, that's an earth gravity weight measurement. Maybe they're talking about moon weight :) Actually, not using a measurement of mass is

Well since it's in pounds, that's an earth gravity weight measurement. Maybe they're talking about moon weight :) Actually, not using a measurement of mass is a bit of a red flag. EDIT: Perhaps I should read the paper and not rely on science-journalism. At first glance paper looks pretty good in terms of mass measurement and estimation.