This patch commemorates the sixteenth expeditionary mission to the International Space Station (ISS). The design represents the conjunction of two unique astronomical events: a transit of the ISS across the surface of a full moon, and a nearly complete annular eclipse of the sun. The ISS is shown in its complete configuration, symbolizing the role of this expedition in preparing for the arrival and commissioning of international partner modules and components. The ISS transit across the moon highlights its role in developing the techniques and innovations critical to enable long-duration expeditions to the lunar surface and beyond.
http://spaceflight.nasa.gov/gallery/images/station/crew-16/html/iss016s001a.html
http://commons.wikimedia.org/w/index.php?title=File:2010_ISS_Calendar.pdf&amp;page=13
NASA