Browsing named entities in A Dictionary of Greek and Roman biography and mythology (ed. William Smith). You can also browse the
collection for 280 BC or search for 280 BC in
Your search returned 36 results in 34 document
（*)Ari/starxos), of SAMOS , one of the earliest astronomers of the Alexandrian school. We know little of his history, except that he was living between B. C. 280 and 264.
The first of these dates is inferred from a passage in the mega/lh su/ntacis of Ptolemy (3.2, vol. i. p. 163, ed. Halma), in which Hipparchus is said to have referred, in his treatise on the length of the year, to an observation of the summer solstice made by Aristarchus in the 50th year of the st Calippic period : the second from the mention of him in Plutarch (de Facie in Orbe Lunae), which makes him contemporary with Cleanthes the Stoic, the successor of Zeno.
On the magnitudes and distances of the sun and moon (peri\ megeqw=n kai\ a)posthma/twn h(li/ou kai\ selh/nhs）
Aristarchus seems that he employed himself in the determination of some of the most important elements of astronomy; but none of his works remain, except a treatise on the magnitudes and distances of the sun and moon (peri\ me