I've been watching some old episodes of Enterprise. Not bad, not great, worth streaming. When they are on planet, or in the ship, and when dealing with aliens, everything is described in meters, or kilometres per hour, hours, etc. OK, you have to use something but: Meters are a measure relative to earth. Hours / seconds are a concept relative to earth. Space distances are measured in light years - the distance light will travel in a year, again, relative to earth. Solution? I don't know. Distance could be a multiple of the wavelength of white light? Maybe time should be based on some frequency of light or something else. Maybe a half-life of some element? I'm sure some some physicists have a found a solution / better measurement system. I just have not looked it up. Just griping about little stuff here. Maybe some of you can relate.