100 photos to explain Humans to Aliens

Heard about this on the news today.  Artist, Trevor Paglen, has sent a collection of 100 photos into space to explain us to any aliens who might happen upon it. Hopefully they can read the captions

. . . . .   Attention DPR Challenge Hosts - is there a good challenge theme here?

Here's one link - of many:

http://blastr.com/2012/09/the-100-photos-being-sent.php