Today we celebrate Galileo Galilei — the visionary who dared to question the heavens. 🔭✨ When he turned his telescope toward the sky in 1609, he revealed mountains on the Moon, sunspots on the Sun, the phases of Venus, and four moons orbiting Jupiter — proving that Earth was not the center of everything. His discoveries reshaped our understanding of the cosmos and laid the foundation for modern astronomy. 🌌 Curiosity. Courage. Revolution. Happy Birthday to the man who changed humanity’s place

How to Become an Astronomer: 15 Steps (with Pictures) - wikiHow