fromwww.scientificamerican.com
1 month agoDo Objects Always Appear Smaller with Distance? Not on Cosmic Scales!
If you're on the surface of Earthand I'm betting you arethere are many ways to reliably estimate the distance to some object. One we use almost subconsciously is to compare an object's apparent size with how big we know it to be. For example, you have a good feel for the size of, say, a typical human. So if you see someone looming large in your vision, you can reckon they're nearby, whereas if they appear very small, they must be much farther away.