I work for Planet Labs, and our satellites are 5kg[1] each, providing 3-5m ground-resolution imaging. You can do a lot with relatively little mass these days.

I work for Planet Labs, and our satellites are 5kg[1] each, providing 3-5m ground-resolution imaging. You can do a lot with relatively little mass these days. 1: http://space.skyrocket.de/doc_sdat/flock-1.htm http://space.skyrocket.de/doc_sdat/flock-1.htm