Galilean moons century when other inner moons were discovered, and Marius' names became widely used. Galileo was able to develop a method of determining longitude based on the timing of the orbits of the Galilean moons. The times of the eclipses of the moons could be precisely calculated in advance, and compared with local observations on land or on ship to determine the local time and hence longitude. The main problem with the technique was that it was difficult to observe the Galilean moons through a telescope on a moving ship; a problem that Galileo tried to solve with the invention of
Peter Conde Peter Conde Peter Conde (born 2 December 1958) is an Australian sailor and leading Australian sport administrator. In August 2017, he was appointed as the Director of the Australian Institute of Sport. Conde was born on 3 December 1958. He has attained a Bachelor of Mechanical Engineering from University of Queensland and Masters of Business Administration from Australian Graduate School of Management. Prior to his appointment as Yachting Australia Performance Manager, Conde worked for international consulting firms Boston Consulting Group and A T Kearney. Conde is a successful sailor with a silver medal in the laser class at the 1979