Flock 1 is a fleet of 28 small satellites. Its deployment began on 11 Feb 2014 from the International Space Station. It was at that date the largest single constellation of Earth-imaging satellites ever to launch into space.
Built and operated by Planet Labs of San Francisco, the Flock 1 small satellites are individually referred to as Doves.
The Dove satellites are part of a class of miniature satellites often called CubeSats. These small satellites will capture imagery of Earth for use in humanitarian, environmental and commercial applications. Data collected by the Flock 1 constellation will be universally accessible to anyone who wishes to use it.