The official mission insignia of the Expedition 55 crew.
The six crew members of Expedition 55 are patriots from three different countries – Japan, Russia, and the United States. The crew from these three countries will work together to ensure the success of Expedition 55.
The three rings symbolize the three countries of the six crew members. The rings join in a common intersection, symbolizing collaboration and a common focus for the crew aboard the space station. The colors of the rings represent the energy and power required to carry humans and equipment into space and to operate the ISS. The colors blue and green represent the magnificent beauty of Earth. The color black represents the darkness of space, and the immense challenge of exploring space. The six stars represent the crew, Norishige Kanai, Scott Tingle, Anton Shkaplerov, A.J. (Drew) Feustel, Oleg Artemyev, and Ricky Arnold. The three flags are the flags representing each crew member’s country. The swoosh extending upward towards space represents the dedication of cosmonauts, astronauts and a multinational support team working together to explore space and discover new science that will benefit all humans.
https://www.flickr.com/photos/nasa2explore/40341776262/
http://www.spacefacts.de/iss/english/exp_55.htm (direct link)
http://www.collectspace.com/ubb/Forum18/HTML/001377.html (direct link)
Expedition 55 - Mission Summary.pdf
NASA/Tim Gagnon and Jorge Cartes