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Jupiter. History shows Galileo to be much more than an astronomical hero,  though. His clear and careful record keeping and publication style not  only let Galileo understand the Solar System, it has let others  understand *how* Galileo came to understand did  it. His work is credited as the start of the "Scientific Revolution." Galileo’s notes, and the  key publication based on them \cite{galilei}, directly integrated his **data** (drawings of Jupiter and its  moons), key **metadata** (timing of each observation, weather, telescope