Useful Notes / Earth

http://static.tvtropes.org/pmwiki/pub/images/earth-moon_8162.jpg
Earth on the left, Moon on the right. Image to scale.
"You realize our planet's name means dirt, right?"
Rick Sanchez, Rick and Morty

The Earth is the planet we all live on. It is the most Conveniently Close Planet. It is the only planet TV Tropes exists on. All Tropers were born and live on Earth, unless we have someone currently on the International Space Station. There are over seven billion humans living on Earth. To learn more about Earth, all you have to do is go outside, but we don't blame you if you don't want to.

Earth is really weird when compared to the other planets. The first and most obvious difference is it is the only known place life exists. It is the most tectonically activenote  planet in the solar system (Io more active, but it's a moon of Jupiter). It has the largest moon in comparison to its parent body's size in the solar system. Earth is the only planet with vast oceans of liquid water on the surface.

The human race evolved on Earth OR arrived there at some point in the past OR was placed here by The Powers That Be. It took us a while to realize that we were on a planet, and not the center of the universe. It took us a bit to realize it was round, not flat, that it spun around on its own, and that it went around the sun - not the other way around.

The Earth is the standard we use to measure the universe with. The atmospheric pressure and gravity are considered "1" when compared to other planets, which are either higher or lower than that number. We call dirt "earth", even when talking about the dirt on other planets. Our moon is called simply the "moon". We measure the distances around the solar system in "Astronomical Units" (AU) - the distance from the Sun to the Earth.

For the "Mostly Harmless" version of this article, see JustForFun: Earth

The Earth In Fiction

All fiction is set on Earth unless otherwise specified - because of this a list of fiction set on Earth would be incredibly unwieldy and encompass probably 95% of works. This is because Most Writers Are Human and they write what they know. Fiction set off Earth is usually called Fantasy or Science Fiction, unless it's not.
http://tvtropes.org/pmwiki/pmwiki.php/UsefulNotes/Earth