References:
- https://en.wikipedia.org/wiki/Galileo_(spacecraft)
- http://discovermagazine.com/2007/jul/20-things-you-didn2019t-know-about-galileo/
- http://www.history.com/topics/galileo-galilei
- http://www.facts-about.org.uk/famous-people-facts-starting-with-g/galileo.htm
- http://northendwaterfront.com/2010/01/why-galileo-is-so-important-today/
- https://en.wikipedia.org/wiki/Galileo_(satellite_navigation)
- http://www.history.com/topics/galileo-galilei