I have to share this, it's even on topic!
To create a scale model of our universe where the earth is the size of a marble, you have to have an area 7 miles wide.
https://vimeo.com/139407849
This is so cool, check it out.

To create a scale model of our universe where the earth is the size of a marble, you have to have an area 7 miles wide.
https://vimeo.com/139407849
This is so cool, check it out.