Earth is just shy of 8 km from the sun in this model. ...which reminds me that we're 8 light minutes out from the sun. So the 1:20 million scale happens to fall pretty close to a 1km:1 light minute scale!
units(1) confirms this (and groks "light minute" - huh!). 1 km : 1 lm is 1:18 million - within 10%.
To get a feel for how vast interstellar distances are, if we wanted to place Alpha Centauri on the Swedish solar system map, we'd have to put it 5x further from Sweden than the moon - at this insane scale, interstellar distances still require interplanetary distances!
units(1) confirms this (and groks "light minute" - huh!). 1 km : 1 lm is 1:18 million - within 10%.
To get a feel for how vast interstellar distances are, if we wanted to place Alpha Centauri on the Swedish solar system map, we'd have to put it 5x further from Sweden than the moon - at this insane scale, interstellar distances still require interplanetary distances!