Our solar system officially has eight planets and one star: the Sun. The discovery of an object larger than Pluto in 2005 rekindled the debate over whether such objects, belonging to the Kuiper Belt – a collection of icy bodies located beyond Neptune – should be called planets. Pluto and other large members of the Kuiper Belt are now considered “dwarf planets.”
Foundation plaques B (photo 1) and A (photo 2), dating to the early 4th century BCE. Both these plaques of hammered gold have been inscribed in Old Persian, and are from Iran during the Achaemenid period.