We are but specks of dust

Photo credit: http://apod.nasa.gov/apod/ap060321.html This photo is of a cluster of galaxies. Yes, you read that right, GALAXIES! When I first saw this picture I didn’t think much of it. But then I really thought about it and was simply blown away. A galaxy is huge and this is a cluster of them! I wondered, how much space are we looking at here? Let’s try to put this in perspective. Michigan (where I live) is about 400 miles (640 km) wide, New York to Los Angeles is 2500 miles (4000 km), the...