NASA announced the end of the mission of its Dawn space probe after it ran out of the hydrazine used by its thrusters prevented it from orienting towards Earth to communicate with the mission control through NASA’s Deep Space Network. Dawn is in a stable orbit around the dwarf planet Ceres and will probably remain there for at least 50 years. It’s the only space probe to have orbited two celestial bodies since the first part of its mission was orbiting the giant asteroid Vesta.