Ancient Greek Philosopher Proposed a Heliocentric Universe

Aristarchus of Samos, a Greek philosopher and mathematician proposed a heliocentric universe theory in 300 BCE, that the earth and planets make circular orbits around the sun. Two earlier Greek philosophers, Philolaus and Hicetas hypothesized the earth revolved around a fiery centre yet, it was not the sun. A detailed theory was revived by Nicolaus Copernicus (Mikolaj Kopernik), and supported by Galileo Galilei’s observations in the 16th century.

      250 BCE
      Aristarchus of Samos
      Philosopher, Mathematician

Additional Information:

  • Aristarchus of Samos – Ancient History Encyclopedia
    Aristarchus of Samos (c. 310 – c. 230 BCE) was an ancient Greek mathematician and astronomer from Ionia who came up with a revolutionary astronomical hypothesis. He claimed the Sun, not the Earth, was the fixed centre of the universe, and that the Earth, along with the rest of the planets, revolved around the Sun.
  • Aristarchus of Samos – Wikipedia
    Aristarchus of Samos was an ancient Greek astronomer and mathematician who presented the first known heliocentric model that placed the Sun at the center of the known universe …. He might have proposed 87° as a lower bound, since gauging the lunar terminator’s deviation from linearity to one degree of accuracy is …
  • Aristarchus of Samos | Greek astronomer |
    On this ground, the Greek philosopher Cleanthes the Stoic declared in his Against … Archimedes said in his Sand-Reckoner that Aristarchus had proposed a new theory which, if true, would … (1543), Copernicus cited Aristarchus as an ancient authority who had espoused the motion of Earth. … theory of heliocentric system.
  • Aristarchus – Biography, Facts and Pictures – Famous Scientists
    Lifetimes of Selected Ancient Greek Scientists and Philosophers … Copernicus’s book was suppressed by the Church, but gradually, his theory came to be accepted. … Sadly, the book Aristarchus wrote describing his heliocentric Solar System has … 23 centuries ago, Aristarchus’s proposed, with evidence, that the earth and …
  • Who Discovered The Earth Moves Around The Sun? – – Astronomy Trek
    Copernicus (1473-1543) was not the first person to claim that the Earth rotates around the Sun. In Western civilization, ancient Greek astronomer Aristarchus of Samos is generally credited with being the first person to propose a Sun-centred astronomical hypothesis of the universe (heliocentric).

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