Kepler's First Law, also known as the Law of Ellipses, states that every planet in our solar system moves in an elliptical orbit around the Sun. However, there are several synonyms for Keplers First Law that are commonly used in the scientific community. These include the Law of Orbits, which refers to the movement of planets around the Sun, and the Law of Planetary Motion, which outlines the principles that govern the movement of terrestrial bodies. Additionally, Kepler's First Law is sometimes referred to as the Law of Constants, as it describes the unchanging principles that underlie the motion of our solar system's planets.