Projection. If your shadow is further away than your object then the dimensions of the shadow will be exaggerated and so will it's motion. The light itself trav

Projection. If your shadow is further away than your object then the dimensions of the shadow will be exaggerated and so will it's motion. The light itself travels at light speed (duh?), but the image moves faster. Think how your monitor makes moving images without moving pixels. Here's a Vsauce video about it: https://www.youtube.com/watch?v=JTvcpdfGUtQ https://www.youtube.com/watch?v=JTvcpdfGUtQ