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Since there is believed to be no "center" or "edge" of the Universe, there is no particular reference point with which to plot the overall location of the Earth in the universe. [8] Because the observable universe is defined as that region of the Universe visible to terrestrial observers, Earth is, because of the constancy of the speed of light ...
Earth's location in the Universe. Universe – all of time and space and its contents.. Observable universe – spherical region of the Universe comprising all matter that may be observed from Earth at the present time, because light and other signals from these objects have had time to reach Earth since the beginning of the cosmological expansion.
Earth's rotational velocity also varies in a phenomenon known as length-of-day variation. [171] Earth's annual orbit is elliptical rather than circular, and its closest approach to the Sun is called perihelion. In modern times, Earth's perihelion occurs around 3 January, and its aphelion around 4 July.
He argued that the apparent retrograde motion of the planets is an illusion caused by Earth's movement around the Sun, which the Copernican model placed at the centre of the universe. Copernicus himself was mainly motivated by technical dissatisfaction with the earlier system and not by support for any mediocrity principle. [3]
Fremont, Seattle, Washington – a neighborhood in Seattle is the “official” Center of the Universe: sign at the Center of the Universe. John B. Lindale House in Magnolia, Delaware – displays a sign proclaiming "This is Magnolia, the Center of the Universe around which the Earth revolves". [17] New York City [1] [18]
Original - A diagram of Earth’s location in the Universe in a series of eight maps that show from left to right, the Earth, inside the Solar System, inside the Solar Interstellar Neighborhood, inside the Milky Way, inside the Local Galactic Group, inside the Virgo Supercluster, inside our local superclusters, and finally finishing inside the entire observable Universe.
See Earth's location in the universe for an orientation. Subfields of astronomy: Astrophysics – branch of astronomy that deals with the physics of the universe, including the physical properties of celestial objects, as well as their interactions and behavior. [3]
[nb 1] Earth's orbital speed averages 29.78 km/s (19 mi/s; 107,208 km/h; 66,616 mph), which is fast enough to cover the planet's diameter in 7 minutes and the distance to the Moon in 4 hours. [3] The point towards which the Earth in its solar orbit is directed at any given instant is known as the "apex of the Earth's way". [4] [5]
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