How do we know that we live in heliocentric solar system?

Answer 1

We know we live in a heliocentric solar system primarily through observations and calculations made by astronomers like Nicolaus Copernicus, Johannes Kepler, and Galileo Galilei. Kepler's laws of planetary motion, which describe the elliptical orbits of planets around the Sun, and Galileo's observations of the phases of Venus provided strong evidence that the Sun, not the Earth, is at the center of our solar system. Additionally, the gravitational dynamics and mathematical models of celestial mechanics further confirm that the Sun's gravity governs the orbits of the planets. These findings have been supported by modern technology, such as spacecraft observations and telescopic data.