 Hello and welcome back to another episode of Physics Partner. Today we are diving into the fascinating world of Kepler's third law as it applies to the inner planets of our solar system. This law formulated by the renowned scientist Johannes Kepler in the 17th century describes the relationship between a planets orbital period and its distance from the sun. To understand Kepler's third law, we must first grasp the concept of orbital period. The orbital period is the time it takes for a planet to complete one full revolution around the sun. This period is directly related to the planet's distance from the sun, with planets farther from the sun taking longer to orbit than those closer to it. Kepler's third law states that the square of a planet's orbital speed is proportional to the cube of its average distance from the sun. In simpler terms, this means that the farther a planet is from the sun, the longer it takes to complete its orbits. This relationship holds true for all the inner planets of our solar system, Mercury, Venus, Earth and Mars. You can see these calculations on the screen. The application of Kepler's third law extends beyond our solar system and has been used to study and understand the orbital characteristics of planets in other star systems. By applying this law, astronomers can determine the distances of exoplanets from their host stars and predict their orbital periods. In conclusion, Kepler's third law provides a valuable insight into the dynamic of our solar system and beyond. Shedding light on the relationship between a planet's orbital period and its distance from the sun.