What is the Aperture Trash?

All items deleted in Aperture, including projects, albums, folders, versions, and originals, are placed in the Aperture Trash in the Library inspector. You can retrieve any item from the Aperture Trash until you empty it. For more information, see Work with the Aperture Trash.

Figure. Aperture Trash selected in the Library inspector and the Trash contents displayed to the right in the Browser.