Title: Science with the PS1 System Ken Chambers IfA Abstract: The status of the PS1 System will be briefly reviewed, together with the sensitivities and cadences of the various surveys that will be carried out in the 3.5 year PS1 Science Mission. The major science programs that span all of astronomy from the Solar System to Cosmology will be discussed, as well as access to PS1 data and metadata and how to propose new science programs.