The term ''planet'' is an ancient one, with ties to history, science, myth and religion. The planets were originally seen as a divine presence; as emissaries of the gods. As scientific knowledge improved, the human perception of the planets changed over time, incorporating [[#Former planets|a number of disperate objects]]. Even now there is no unconstested definition of what a planet is. In 2006, the IAU officially adopted a resolution [[2006 definition of planet|defining planets]] within the [[Solar System]]. This definition has been both praised and criticised, and remains disputed by some scientists. | The term ''planet'' is an ancient one, with ties to history, science, myth and religion. The planets were originally seen as a divine presence; as emissaries of the gods. As scientific knowledge improved, the human perception of the planets changed over time, incorporating [[#Former planets|a number of disperate objects]]. Even now there is no unconstested definition of what a planet is. In 2006, the IAU officially adopted a resolution [[2006 definition of planet|defining planets]] within the [[Solar System]]. This definition has been both praised and criticised, and remains disputed by some scientists. |