👉 Calandra is a term used in the context of astronomy and astrobiology. It refers to a large, dense star that is not visible through the Earth's atmosphere due to its distance from Earth. The term "calandra" was first described by the astronomer Johannes Kepler in his work "Ornamentum Astronomicum," published in 1609. The word "calandra" means "large body of stars" or "massive star." It is a description of a