Planet Earth is the 32nd full‑length studio album by Prince. It was initially made available on CD with the 15 July 2007 edition of the Mail on Sunday newspaper in the UK and Ireland (using simple slipcard packaging), with a retail release (using a full CD case containing a lenticular cover) following a week later in the rest of the world (sixteen months after the previous album, 3121). The album (using slightly different slipcard packaging to the Mail on Sunday edition) was