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  2. Location of Earth - Wikipedia

    en.wikipedia.org/wiki/Location_of_Earth

    Earth Location. Logarithmic representation of the universe centered on the Solar System. Celestial bodies on this graphic are clickable and shown with their sizes enlarged. Knowledge of the location of Earth has been shaped by 400 years of telescopic observations, and has expanded radically since the start of the 20th century.

  3. Earth - Wikipedia

    en.wikipedia.org/wiki/Earth

    Earth is rounded into an ellipsoid with a circumference of about 40,000 km. It is the densest planet in the Solar System. Of the four rocky planets, it is the largest and most massive. Earth is about eight light-minutes away from the Sun and orbits it, taking a year (about 365.25 days) to complete one revolution.

  4. De revolutionibus orbium coelestium - Wikipedia

    en.wikipedia.org/wiki/De_revolutionibus_orbium...

    405. De revolutionibus orbium coelestium (English translation: On the Revolutions of the Heavenly Spheres) is the seminal work on the heliocentric theory of the astronomer Nicolaus Copernicus (1473–1543) of the Polish Renaissance. The book, first printed in 1543 in Nuremberg, Holy Roman Empire, offered an alternative model of the universe to ...

  5. Nicolaus Copernicus - Wikipedia

    en.wikipedia.org/wiki/Nicolaus_Copernicus

    Nicolaus Copernicus [b] (19 February 1473 – 24 May 1543) was a Renaissance polymath, active as a mathematician, astronomer, and Catholic canon, who formulated a model of the universe that placed the Sun rather than Earth at its center.

  6. Copernican principle - Wikipedia

    en.wikipedia.org/wiki/Copernican_principle

    In physical cosmology, the Copernican principle states that humans are not privileged observers of the universe, [1] that observations from the Earth are representative of observations from the average position in the universe. Named for Copernican heliocentrism, it is a working assumption that arises from a modified cosmological extension of ...

  7. Wikipedia:Picture peer review/Earth's Location in the Universe

    en.wikipedia.org/wiki/Wikipedia:Picture_peer...

    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.

  8. Geocentric model - Wikipedia

    en.wikipedia.org/wiki/Geocentric_model

    Ptolemy argued that the Earth was a sphere in the center of the universe, from the simple observation that half the stars were above the horizon and half were below the horizon at any time (stars on rotating stellar sphere), and the assumption that the stars were all at some modest distance from the center of the universe. If the Earth were ...

  9. Cosmos - Wikipedia

    en.wikipedia.org/wiki/Cosmos

    Cosmology is a branch of metaphysics that deals with the nature of the universe, a theory or doctrine describing the natural order of the universe. [36] The basic definition of Cosmology is the science of the origin and development of the universe. In modern astronomy, the Big Bang theory is the dominant postulation.

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