You hear the talk about orbital crowding, but this one photograph, to me, helps illustrate the reality of it. It's not like people crammed into a subway, but when you think that these objects are flying around at thousands of kilometres per hour, you really hope they don't bump into each other..

Satellites in Shot, Blog (21 Nov 2011)

The image is a five-minute exposure of the Andromeda Galaxy, taken by top astrophotographer Nik Szymanek. But his photo has been blighted by FIVE satellites streaking across the field of view.

via SciBlogs (http://sciblogs.co.nz/open-parachute/2011/11/24/it’s-crowded-up-there/)