Galileo Galilei (1564–1642) was a scientist and philosopher.

Galileo Galilei (; 15 February 1564 – 8 January 1642), was an Italian astronomer, physicist, engineer, philosopher, and mathematician who played a major role in the scientific revolution during the Renaissance. Galileo has been called the "father of observational astronomy", the "father of modern physics", and the "father of science". His contributions to observational astronomy include the telescopic confirmation of the phases of Venus, the discovery of the four largest satellites of Jupiter (named the Galilean moons in his honour), and the observation and analysis of sunspots. Galileo also worked in applied science and technology, inventing an improved military compass and other instruments.

Georgia Library Learning Online, more commonly known as GALILEO, is a virtual library operated by the University System of Georgia. There are numerous databases available, including abstracts and full-text. The Digital Library of Georgia is also part of the GALILEO system.