I think one useful comparison would be to convert their measurement of the speed of light to our measurement and vice versa. They will use different units of distance and time, but the values themselves will be proportional unless they live in a black hole.
That could work for velocities, but any measure of distance is based on our notion of time, like “light year” (the distance light can travel in one rotation of the Earth around the sun), which is relative.
Even an AU is the distance from Earth to our sun.
To be fair, we don’t really have another point of reference with which to measure stuff.
A good way to portray distance could be a blip the length of time it would take light to travel that far. Like an RF signal that lasts as long as it would take for light up travel from one edge of an object to the other edge of the object.
… It’s a difficult problem to try to solve even as a mental exercise.
I think one useful comparison would be to convert their measurement of the speed of light to our measurement and vice versa. They will use different units of distance and time, but the values themselves will be proportional unless they live in a black hole.
That could work for velocities, but any measure of distance is based on our notion of time, like “light year” (the distance light can travel in one rotation of the Earth around the sun), which is relative.
Even an AU is the distance from Earth to our sun.
To be fair, we don’t really have another point of reference with which to measure stuff.
A good way to portray distance could be a blip the length of time it would take light to travel that far. Like an RF signal that lasts as long as it would take for light up travel from one edge of an object to the other edge of the object.
… It’s a difficult problem to try to solve even as a mental exercise.