Since November 2, 2000, humans have lived and worked continuously on the orbiting laboratory, bringing together international flight crews to perform more than 3,300 research investigations.
NASA is set to reveal on Wednesday the first images of the largest asteroid sample ever collected in space, something scientists hope will yield clues about the earliest days of our solar system and perhaps the origins of life itself.
The eyes of the teddy bear are the craters on the planet and the circular fracture pattern seen in the head could have been caused by the "settling of a deposit over a buried impact crater.