A planet has been discovered orbiting backward between a heavy central star and a white dwarf in a tight binary system.The system, named ν Octantis, consists of a primary star slightly heavier than the Sun and a dimmer companion.The planet in this system orbits at a distance similar to Earth's distance from the Sun and moves in a backward orbit relative to the white dwarf.The discovery of this unique exoplanetary system sheds light on the diversity of planetary formations in different stellar environments.