For about 4.5 billion years, our planet has circled the sun on a stable, rhythmic path. Each of Earth’s orbits takes approximately 365.25 days to complete, defining the length of a year. But how many times has our planet made this journey since the formation of the solar system? Thanks to stable orbits that have persisted for most of its history, Earth has completed about 4.5 billion full trips around the sun. This monumental number not only provides insight into Earth’s age but also highlights the extraordinary scale of time that governs our solar system. While the early solar system experien…