👉 Heliotropy is a phenomenon in which light or other forms of electromagnetic radiation are directed towards an object that is moving at a constant velocity relative to the observer. This means that the direction of the radiation can be determined by its angle with respect to the motion of the object, and the direction of the radiation is not always fixed for any given time. This concept was first proposed by physicist Johannes Kepler in his work "De Revolutionibus," which discusses the orbits of planets around the Sun. However,
