History UsefulNotes / Earth

The Earth (also known as Terra, Tellus, Gaia, or countless other names[[note]]For obvious reasons, every language has a name for this planet. The International Astronomical Union recognizes "Earth" as its English name, but the Latin and Greek alternatives are quite popular in English-language science fiction.[[/note]]) is the planet we all live on. It is the most ConvenientlyClosePlanet. It is the only planet Website/TVTropes exists on. All tropers were born and live on Earth, unless we have someone currently on the International SpaceStation (in that case, hello). There are over eight billion humans living on Earth. To learn more about Earth, all you have to do is [[RealLife go outside]], but [[JustForFun/TVTropesWillRuinYourLife we don't blame you if you don't want to]].

The Earth (also known as Terra, Tellus, Gaia, or countless other names[[note]]For obvious reasons, every language has a name for this planet. The International Astronomical Union recognizes “Earth” as its English name, but the Latin and Greek alternatives are quite popular in English-language science fiction.[[/note]]) is the planet we all live on. It is the most ConvenientlyClosePlanet. It is the only planet Website/TVTropes exists on. All tropers were born and live on Earth, unless we have someone currently on the International SpaceStation. There are over eight billion humans living on Earth. To learn more about Earth, all you have to do is [[RealLife go outside]], but [[JustForFun/TVTropesWillRuinYourLife we don't blame you if you don't want to]].

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.[[note]]Then again, the common noun "earth" predates the proper name "Earth" in English as well as various other languages; most cultures simply knew Earth as "the world" or some similar term — again, because it took us a '''long''' time to realize it's just as much of a planet (i.e. moving object) as Venus, Mars, and other long-recognized planets in our sky.[[/note]] Our moon is called simply ''the'' "Moon"[[note]]occasionally "Luna", which is Latin for "Moon"[[/note]], since we named it before learning of any others. We measure the distances around the solar system in "Astronomical Units" ([=AU=]) — the distance from the Sun to the Earth. We measure distances outside the solar system in either light-years, the distance light travels in the time it takes Earth to orbit the Sun once, or parsecs[[note]]about 3.26 light-years[[/note]], the distance where the parallax angle measured from opposite sides of Earth's orbit is one arc-second.

The Earth (also known as Terra, Tellus, Gaia, or countless other names[[note]]For obvious reasons, every language has a name for this planet. The International Astronomical Union recognizes “Earth” as its English name, but the Latin and Greek alternatives are quite popular in English-language science fiction.[[/note]]) is the planet we all live on. It is the most ConvenientlyClosePlanet. It is the only planet Website/TVTropes exists on. All tropers were born and live on Earth, unless we have someone currently on the International SpaceStation. There are over seven billion humans living on Earth. To learn more about Earth, all you have to do is [[RealLife go outside]], but [[JustForFun/TVTropesWillRuinYourLife we don't blame you if you don't want to]].

The Earth (also known as Terra, Tellus, Gaia, or countless other names[[note]]For obvious reasons, every language has a name for this planet. The International Astronomical Union recognizes “Earth” as its English name, but the Latin and Greek alternatives are quite popular in English-language science fiction.[[/note]]) is the planet we all live on. It is the most ConvenientlyClosePlanet. It is the only planet Wiki/TVTropes exists on. All tropers were born and live on Earth, unless we have someone currently on the International SpaceStation. There are over seven billion humans living on Earth. To learn more about Earth, all you have to do is [[RealLife go outside]], but [[JustForFun/TVTropesWillRuinYourLife we don't blame you if you don't want to]].

The Earth (also known as Terra, Tellus, Gaia, or countless other names[[note]]For obvious reasons, every language has a name for this planet. The International Astronomical Union recognizes “Earth” as its English name, but the Latin and Greek alternatives are quite popular in English-language science fiction.[[/note]]) is the planet we all live on. It is the most ConvenientlyClosePlanet. It is the only planet Wiki/TVTropes exists on. All {{troper}}s were born and live on Earth, unless we have someone currently on the International SpaceStation. There are over seven billion humans living on Earth. To learn more about Earth, all you have to do is [[RealLife go outside]], but [[JustForFun/TVTropesWillRuinYourLife we don't blame you if you don't want to]].

The Earth (also known as Terra, Tellus, Gaia, or countless other names[[note]]For obvious reasons, every language has a name for this planet. The International Astronomical Union recognizes “Earth” as its English name, but the Latin and Greek alternatives are quite popular in English-language science fiction.[[/note]]) is the planet we all live on. It is the most ConvenientlyClosePlanet. It is the only planet Wiki/TVTropes exists on. All {{troper}}s were born and live on Earth, unless we have someone currently on the International SpaceStation. There are over seven billion humans living on Earth. To learn more about Earth, all you have to do is [[RealLife go outside]], but [[TVTropesWillRuinYourLife we don't blame you if you don't want to]].

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.[[note]]Then again, the common noun "earth" predates the proper name "Earth" in English as well as various other languages; most cultures simply knew Earth as "the world" or some similar term — again, because it took us a '''long''' time to realize it's just as much of a planet (i.e. moving object) as Venus, Mars, and other long-recognized planets in our sky.[[/note]] Our moon is called simply ''the'' "Moon"[[note]]occasionally "Luna", which is Latin for "Moon"[[/note]], since we named it before learning of any others. We measure the distances around the solar system in "Astronomical Units" ([=AU=]) — the distance from the Sun to the Earth.

* Surface Gravity: 1 g (9.807 m/s)

* Mass: 1 Earth (5.97237×10⁴ kg)

With alien life undiscovered, scientists needn't agree on a name for Earth's living things, but we have choices. The two most popular are probably "Earthling", which dates back to [[UsefulNotes/HistoryOfEnglish Early Modern English]], and "Terran", which comes from the planet's Latin name "Terra".

The human race [[UsefulNotes/{{Evolution}} evolved on Earth]] OR [[{{Panspermia}} arrived there at some point in the past]] OR [[CreationMyth was placed here]] by ThePowersThatBe. [[HiddenInPlainSight It took us a while to realize]] that we were on a planet, and not [[EarthIsTheCenterOfTheUniverse the center of the universe]]. It took us a bit to realize it was round, not [[FlatWorld 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.[[note]]Then again, the common noun "earth" predates the proper name "Earth" in English as well as various other languages; most cultures simply knew Earth as "the world" or some similar term — again, because it took us a '''long''' time to realize it's just as much of a planet (i.e. moving object) as Venus, Mars, and other long-recognized planets in our sky.[[/note]] Our moon is called simply ''the'' "Moon"[[note]]though it does have a name, Luna, which is Latin for "Moon"[[/note]]. We measure the distances around the solar system in "Astronomical Units" ([=AU=]) — the distance from the Sun to the Earth.

* Mass: 1 Earth (5.97237×10
⁴ kg)

* Surface Gravity: 1 g (9.807 m/s
)

The Earth (sometimes known as Terra) is the planet we all live on. It is the most ConvenientlyClosePlanet. It is the only planet Wiki/TVTropes exists on. All {{troper}}s were born and live on Earth, unless we have someone currently on the International SpaceStation. There are over seven billion humans living on Earth. To learn more about Earth, all you have to do is [[RealLife go outside]], but [[TVTropesWillRuinYourLife we don't blame you if you don't want to]].

* Mass: 1 Earth (5.97237×10
⁴ kg)
* Density: 5.514 g/cm3
* Surface Gravity: 1 g (9.807 m/s2)