520s BC

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Astronomy

Pythagoras of Samos [b. Samos (Greek Aegean island), c. 569 bce, d. Metapontum (Italy) or Croton (Crotone, Italy), c. 480 bce] recognizes that the morning and evening stars are the same heavenly body, the planet Venus. He proposes that the Sun, Moon, planets, and stars move in paths around Earth, which is suspended in space. See also 450 bce Astronomy. (See essay.)

Earth science

Pythagoras recognizes that Earth is a sphere. See also 550 bce Communication.

Physics

Pythagoras discovers that musical harmony can be explained with number (for example, doubling the length of a plucked string produces a note one octave lower). See also 500 bce Construction.


Millennium: 1st millennium BC
Centuries: 7th century BC6th century BC5th century BC
Decades: 550s BC 540s BC 530s BC520s BC510s BC 500s BC 490s BC
Years: 529 BC 528 BC 527 BC 526 BC 525 BC 524 BC 523 BC 522 BC 521 BC 520 BC
Categories: BirthsDeaths – Architecture
EstablishmentsDisestablishments
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