I believe the Earth has a public domain dedication. More or less.

Internationally, the public domain is the body of creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest (typically a government-granted monopoly such as a copyright or patent). Such works and inventions are considered part of the public's cultural heritage, and anyone can use and build upon them without restriction (not taking into account laws concerning safety, export, etc).

While copyright was created to protect the financial incentive of those doing creative work as a means to encourage more creative work, works in the public domain just exist as such, and the public have the right to use and reuse the creative work of others without financial or social burden.