Here is one difference: The "velocities" suggested by an expansion of space can be well above the speed of light whereas classical velocities cannot. https://b

Here is one difference: The "velocities" suggested by an expansion of space can be well above the speed of light whereas classical velocities cannot. https://bigthink.com/starts-with-a-bang/universe-speed-of-light/ https://bigthink.com/starts-with-a-bang/universe-speed-of-li...