When I was bored some time ago I did the math just to have a picture in mind what the solar system would look like when the sun is a ball of 10cm diameter. I ma

When I was bored some time ago I did the math just to have a picture in mind what the solar system would look like when the sun is a ball of 10cm diameter. I made no fancy visualization but I think the numbers are impressive of their own. So, if the sun is a small ball hovering in the middle of an empty space: - the earth is a pinhead circling at a distance of 8m - with a speck of dust circling it 2cm away (a.k.a. the moon) - Jupiter is a marble 40m away from the sun - the next sun is 2km away - oh, and the light moves with the speed of a snail. So you want to visit the next planet system? If you fly with speed of ligth, it's like a snail crawling from Berlin to Madrid. What's impressive for me are not the size differences of all the objects but how empty the space is.