In 'Galileo Galilei', you step into the shoes of an ambitious astronomer during the challenging era of obscurantism, where scientific knowledge was a perilous journey. Your mission is to unravel the mysteries of the cosmos, discovering new planets and star systems, all while enhancing your telescope to make revolutionary scientific breakthroughs. This robust Eurogame challenges you to use a clever rondel to select from five main actions, with the possibility of evolving these actions into more powerful versions throughout the game. You'll collect cards representing different celestial bodies and specific colored lenses to materialize your discoveries. But beware! The Inquisition is always lurking, and its representatives can appear at any moment, threatening your reputation. The clever twist is that, instead of simply avoiding the inquisitors, you can find ways to profit from their visit, turning a potential disaster into an opportunity. Prepare to influence areas, plan your end-game bonuses, and adapt your strategy to each new game setup, all while trying to change how the world views the universe.