An explorable explanation of relativistic spacetime
As a kid there was a military air base in the neighboring city, so fighter jets passed our home regally. It was always fascinating that the sound and the plane where on different locations. You could always hear them but it was hard to spot the actual plane in the sky. Now imagine if they jets where going faster then light and that light was a bit slower so we could see them. That would mean the visible position would be different then the physical position of the plane ...