> That's a lot of fuel - and that's just one constellation. Is that a lot of fuel? 5kg times 12000 is about 60 tonne. That's the weight of two big truck appro

> That's a lot of fuel - and that's just one constellation. Is that a lot of fuel? 5kg times 12000 is about 60 tonne. That's the weight of two big truck approximately. In which sense is that a lot of fuel? And besides krypton is a noble gas, it doesn't react with anything.