I used the Openspace astronomy software to create images on my astronomy site showing metric distances from 1 kilometer up to 100 yottameters.
If you want to view them, go here and click thru the Next button. The site has no ads btw.
Openspace is astronomy software that lets you view all of outer space in 3-d. I posted a dashboard asset to display metric units in scales relevant to the distance, and also got the maintainer to add partial support for metric distances directly into the C++ code in future releases. So the software will now display astronomy distances in any metric scale from kilometers to yottameters.