It means that the overall volume of space is increasing over time. There isn’t anything that the inverse sits in or expands into. We make measurements of how far things are from us in the universe and these objects get farther away in a manner not due to, say, moving through space. We deduce that the volume of space itself is increasing.
warblingContinues t1_iwmgqh8 wrote
Reply to comment by Nwadamor in Ask Anything Wednesday - Engineering, Mathematics, Computer Science by AutoModerator
It means that the overall volume of space is increasing over time. There isn’t anything that the inverse sits in or expands into. We make measurements of how far things are from us in the universe and these objects get farther away in a manner not due to, say, moving through space. We deduce that the volume of space itself is increasing.