The planetary system HD 7924. A team of astronomers using three ground-based telescopes in the United States has discovered two super-Earths around a nearby star known as HD 7924. HD 7924 is a 7th magnitude K-dwarf star, with a radius of around 78 percent that of the Sun. It is located in the constellation Cassiopeia, roughly 54 light-years away. Image credit: Karen Teramura / Benjamin Fulton / UH IfA.