This is the sun, it’s about 10 cm big. The earth is traveling through space somewhere around 12 m from here. It’s not even 1mm big and traveling at a slow 4.5mm per hour…

Let’s say you’re working on a game set in space and you wanted to make it a bit more realistic than the average space-game – you might not want to be all too accurate with the numbers or it will be very very empty and very very slow…