How much should you pay for a space stock?Examining the history of this newest of investment sectors, and crunching the numbers on valuation, I concluded a few years back that the "right" price to pay for a space stock -- assuming it has some sales but not yet profits and is growing quickly -- generally ranges from 2 to 4 times trailing sales.But that particular space train has totally left the station.Thanks to the attention the space sector has been attracting since the recent Artemis II mission landed an ...