What is earth?

  • (noun): A connection between an electrical device and the earth (which is a zero voltage).
    Synonyms: ground
    See also — Additional definitions below

Earth

Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets. It is sometimes referred to as the world, the Blue Planet, or by its Latin name, Terra.

Read more about Earth.

Some articles on earth:

Gravitational Constant - The GM Product
... astronomical body such as the Sun or the Earth—is known as the standard gravitational parameter and is denoted ... Also, for celestial bodies such as the Earth and the Sun, the value of the product GM is known more accurately than each factor independently ... For Earth, using M⊕ as the symbol for the mass of the Earth, we have Calculations in celestial mechanics can also be carried out using the unit of solar mass rather than the standard SI ...
Persephone - Greek Mythology - Abduction Myth
... a field when Hades came to abduct her, bursting through a cleft in the earth ... her daughter had disappeared, searched for her all over the earth with torches ... In most versions she forbids the earth to produce, or she neglects the earth and in the depth of her despair she causes nothing to grow ...
Earth - Cultural Viewpoint
... Main article Earth in culture The standard astronomical symbol of the Earth consists of a cross circumscribed by a circle ... rest of the planets in the Solar System, humankind did not begin to view the Earth as a moving object in orbit around the Sun until the 16th century ... Earth has often been personified as a deity, in particular a goddess ...
2004 AS1
... known by the temporary name AL00667, is a near-Earth asteroid, first discovered on January 13, 2004, by the LINEAR project ... Center (MPC) suggesting an imminent collision with Earth on or about January 15 with a likelihood of 14 ... The asteroid passed at a distance of 12 Gm (or 32 times the distance from the Earth to the Moon), posing no threat ...
2004 FH
2004 FH is a near-Earth asteroid that was discovered on March 15, 2004, by the NASA-funded LINEAR asteroid survey ... passed just 43,000 km (27,000 mi) above the Earth's surface on March 18, 2004, at 2208 UTC making it the 11th closest approach to Earth recorded as of 21 November ... For comparison, geostationary satellites orbit Earth at 35,790 km ...

More definitions of "earth":

  • (noun): Once thought to be one of four elements composing the universe (Empedocles).
  • (noun): The 3rd planet from the sun; the planet on which we live.
    Example: "The Earth moves around the sun"
    Synonyms: world, globe
  • (verb): Connect to the earth.
    Example: "Earth the circuit"
  • (noun): The abode of mortals (as contrasted with heaven or hell).
    Example: "It was hell on earth"
  • (noun): The loose soft material that makes up a large part of the land surface.
    Example: "They dug into the earth outside the church"
    Synonyms: ground
  • (verb): Hide in the earth like a hunted animal.

Famous quotes containing the word earth:

    The heavy sensual shoulders, the thighs, the blood-born flesh
    and earth turning into color, rocks into their crystals,
    water to sound, fire to form: life flickers
    uncounted into the supple arms of love.
    Muriel Rukeyser (1913–1980)

    the plump of my belly, the
    hollow of your
    groin, as a constellation,
    how it leans from earth to
    dawn in a gesture of
    play....
    Denise Levertov (b. 1923)

    War was return of earth to ugly earth,
    War was foundering of sublimities,
    Extinction of each happy art and faith
    By which the world had still kept head in air.
    Robert Graves (1895–1985)