👉 The term "heliogram" is a term used in astronomy and space exploration to describe the observation of a spacecraft's trajectory as it approaches or passes over another celestial body. This concept involves measuring the time, distance, and altitude at which an object moves through space relative to another celestial body or observer. In more technical terms, "heliogram" refers to the process of observing the motion of a spacecraft in orbit around another celestial body, such as the Earth or the Moon, using scientific
