Sources
http://en.wikipedia.org/wiki/International_Space_Station
http://commons.wikimedia.org/wiki/File:Mir_entre_l%27espace_et_la_Terre.jpg
http://commons.wikimedia.org/wiki/File:STS-135_ISS-28_The_All-American_Meal_3.jpg
http://www.nasa.gov/mission_pages/station/main/index.html
http://pixabay.com/en/iss-space-station-11114/
http://pixabay.com/en/astronaut-international-space-station-67639/
http://www.fotopedia.com/items/flickr-4996416777
http://en.wikipedia.org/wiki/File:STS-108_crew2.jpg
https://commons.wikimedia.org/wiki/File:Smiley.svg
http://commons.wikimedia.org/wiki/File:STS-134_patch.png
http://commons.wikimedia.org/wiki/File:Mir_entre_l%27espace_et_la_Terre.jpg
http://commons.wikimedia.org/wiki/File:STS-135_ISS-28_The_All-American_Meal_3.jpg
http://www.nasa.gov/mission_pages/station/main/index.html
http://pixabay.com/en/iss-space-station-11114/
http://pixabay.com/en/astronaut-international-space-station-67639/
http://www.fotopedia.com/items/flickr-4996416777
http://en.wikipedia.org/wiki/File:STS-108_crew2.jpg
https://commons.wikimedia.org/wiki/File:Smiley.svg
http://commons.wikimedia.org/wiki/File:STS-134_patch.png