Earth is a planet located in the Milky Way, a galaxy set in the area of space classified by the Guardians of the Universe as Space Sector 2814. Having been around for billions of years, Earth is the homeworld of its dominant species, the human race. Earth is often the victim of extraterrestrial invasions, which are typically combated by the planet's various superheroes and metahumans, as well as its numerous governments and armies.
- Many of the universes in the Multiverse are named for Earth, such as New Earth and Prime Earth.
- Earth is generally the primary setting of the majority of stories set in the DC Universe.