270s BC

Astronomy

Aristarchus [b. Samos, c. 310 bce, d. Alexandria, c. 230 bce] makes first rough calculation of the distance and size of the Moon and proposes that Earth and the planets revolve about the Sun. See also 350 bce Astronomy.

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Millennium:	1st millennium BC
Centuries:	4th century BC – 3rd century BC – 2nd century BC
Decades:	300s BC 290s BC 280s BC – 270s BC – 260s BC 250s BC 240s BC
Years:	279 BC 278 BC 277 BC 276 BC 275 BC 274 BC 273 BC 272 BC 271 BC 270 BC
Categories:	Births – Deaths – Architecture Establishments – Disestablishments

Events and trends

• Gauls first settle in Galatia
• End of the city of Babylon
• Pyrrhic War between Epirus and Rome

Births

Deaths

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