heliocentric theory

heliocentric theory: Encyclopedia - Nicolaus Copernicus

Mikołaj Kopernik (February 19, 1473 – May 24, 1543), more commonly known by the Latin form Nicolaus Copernicus, was a Polish[1] astrologer, astronomer, mathematician, administrator and economist. He is mainly remembered for developing a scientifically-useful heliocentric (Sun-centered) theory of the solar system. Copernicus worked in Royal Prussia as a church canon, governor, administrator, economist, jurist, physician, astrologer and, in con ...

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heliocentric theory: Encyclopedia II - Nicolaus Copernicus - The Copernican heliocentric system Nicolaus Copernicus - Earlier theories. Much has been written about earlier heliocentric theories. Philolaus (4th century BC) was one of the first to hypothesize movement by the Earth, probably inspired by Pythagoras' theories about a spherical Globe. Aristarchus of Samos in the 3rd century BC had developed some theories of Heraclides Ponticus (speaking of a revolution by Earth on its axis) to propose what was, so far as is known, the first serious model of a heliocentric solar system. His work about a hel ...

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De revolutionibus orbium coelestium - Bibliography

heliocentric theory: Encyclopedia - Christoph Scheiner

Christoph Scheiner (July 25, 1573 or 1575 – June 18, 1650) was a German astronomer and Jesuit. He was one of the first to observe sunspots (in 1611), although he took these to be satellites of the Sun. He was assisted by Johann Baptist Cysat in his observations of this phenomenon. His book Rosa Ursina was published in 1630; by this time, he agreed with Galileo that sunspots were on the Sun's surface or in its atmosphere. Because the Maunder Minimum subsequently drastically reduced sunspot activity for many decades, his book remained ...

heliocentric theory: Encyclopedia - Heliocentrism

In astronomy, heliocentrism is the theory that the Sun is at the center of the Universe and/or the Solar System. The word is derived from the Greek (Helios = "Sun" and kentron = "Center"). Historically, heliocentrism is opposed to geocentrism and currently to modern geocentrism, which places the earth at the center. (The distinction between the Solar System and the Universe was not clear until modern times, but extremely important relative to the controversy over cosmology and religion.) In the 16th and 17th centuries, w ...

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Heliocentrism - Modern use of geocentric and heliocentric

heliocentric theory: Encyclopedia - 288 BC

Centuries: 4th century BC - 3rd century BC - 2nd century BC Decades: 330s BC 320s BC 310s BC 300s BC 290s BC - 280s BC - 270s BC 260s BC 250s BC 240s BC 230s BC 293 BC 292 BC 291 BC 290 BC 289 BC 288 BC 287 BC 286 BC 285 BC 284 BC 283 BC Events Planting of the Sri Maha Bodhi Sacred Fig tree at Anuradhapura, Sri Lanka, the earliest known planting date for any planted tree still surviving. King Demetrius I of Macedon flees Macedon after an attack by Pyrrhus of Epirus. ...

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heliocentric theory: Encyclopedia - Aryabhata

Aryabhata (आर्यभट) Āryabhaṭa) is the first of the great astronomers of the classical age of India. He was born in 476 AD in Ashmaka but later lived in Kusumapura, which his commentator Bhāskara I (629 AD) identifies with Pataliputra (modern Patna). His book, the Āryabhatīya, presented astronomical and mathematical theories in which the Earth was taken to be spinning on its axis and the periods of the planets were given with respect to the sun (in other words, it was heliocentric).He believes that the Mo ...

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Aryabhata - Overview

heliocentric theory: Encyclopedia - Geocentric model

The geocentric model (in Greek: geo = Earth and centron = center) of the universe is a paradigm which places the Earth at its center. Common in ancient Greece after the discovery of the approximately spherical shape of Earth, it was believed by both Aristotle and Ptolemy. Most Greeks assumed that the Sun, Moon, stars, and planets orbit Earth. Similar ideas were held in ancient China. The geocentric model assumes a spherical Earth; thus it is not the same as the older flat Earth model. Also, according to this model, ...

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Geocentric model - Notes

heliocentric theory: Encyclopedia - Ephemeris

Wikisource has ephemerides of several planets: Ephemeris of Sun Ephemeris of Moon Ephemeris of Mercury Ephemeris of Venus Ephemeris of Mars Ephemeris of Jupiter Ephemeris of Saturn Ephemeris of Uranus Ephemeris of Neptune Ephemeris of Pluto Ephemeris of Ceres Ephemeris of Pallas Ephe ...

heliocentric theory: Encyclopedia - Tycho Brahe

Tycho Brahe, born Tyge Ottesen Brahe (December 14, 1546 – October 24, 1601), was a Danish nobleman astrologer and astronomer as well as an alchemist. He was granted an estate on the island of Hven and the funding to build the Uraniborg, an early research institute, where he built large astronomical instruments and took many careful measurements. As an astronomer, Tycho worked to combine what he saw as the geometrical benefits of the Copernican system with the philosophical benefits of the Ptolemaic system into his own model o ...

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heliocentric theory: Encyclopedia - Proclus

Proclus Lycaeus (February 8, 412 – April 17, 485), surnamed "The Successor" or "diadochos" (Greek Πρόκλος ὁ Διάδοχος Próklos ho Diádokhos), was a Greek Neoplatonist philosopher, and considered the last major Greek philosopher, whose influence was felt throughout the Roman provinces, Byzantium, and in translation, by the later Islamic philosophers. Proclus - Biography. Proclis was born 410 or 411 CE (his birth year is deduced from a horoscope cast by a disciple, Marinus, and hen ...

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Proclus - Bibliography

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heliocentric theory: Encyclopedia - August Weismann

Friedrich Leopold August Weismann (*January 17, 1834 in Frankfurt am Main; † November 5, 1914 in Freiburg im Breisgau) was a German Biologist. Ernst Mayr ranks him the second most notable evolutionary theorist of the 19th century, after Charles Darwin. Weismann advocated the germ plasm theory, stating that a multicellular organism consists of germ cells that pass on hereditary information, and somatic cells that perform body functions. The germ cells are not affected by anything the body learns or any ability it acquires duri ...

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August Weismann - Life

August Weismann - Contributions to evolutionary biology

heliocentric theory: Spiritual - Theosophy Dictionary on Geocentric Theory

Geocentric Theory A theory in which the earth is regarded as being at the center of the solar system, usually referring to the system of Claudius Ptolemy.

In accordance with ancient teachings, Ptolemy represents the earth as surrounded by ten concentric spheres: those of water, air (or fire), Moon, Mercury, Venus, Sun, Mars, Jupiter, Saturn, and the stars. To account for the actual irregularities of the planetary motions, he introduced eccentrics and epicycles as corrections, and by this means the system, though complicated, is workable.

The heliocentric theory reduces the complication and anomaly to order and regularity. However, since we are living on the earth, and our consciousness is functioning on the corresponding plane, there is considerable justification for the adoption of a geocentric theory; and this may have been done for exoteric purposes by those who were actually aware of the heliocentric theory.

heliocentric theory: Encyclopedia II - Nicolaus Copernicus - Copernicus and Copernicanism

Copernicus' theory is of extraordinary importance in the history of human knowledge. Many authors suggest that only Euclid's geometry, Isaac Newton's physics and Charles Darwin's theory of evolution have exerted a comparable influence on human culture in general and on science in particular. Many meanings have been ascribed to Copernicus' theory, apart from its strictly scientific import. His work affected religion as well as science, dogma as well as freedom of scientific inquiry. Cop ...

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